diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 09f8d59adc..344c3b3b52 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,28 +1 @@
-{
-  "packages/opentelemetry-api-metrics": "0.25.0",
-  "packages/opentelemetry-context-async-hooks": "0.25.0",
-  "packages/opentelemetry-context-zone-peer-dep": "0.25.0",
-  "packages/opentelemetry-context-zone": "0.25.0",
-  "packages/opentelemetry-core": "0.25.0",
-  "packages/opentelemetry-exporter-collector-grpc": "0.25.0",
-  "packages/opentelemetry-exporter-collector-proto": "0.25.0",
-  "packages/opentelemetry-exporter-collector": "0.25.0",
-  "packages/opentelemetry-exporter-jaeger": "0.25.0",
-  "packages/opentelemetry-exporter-prometheus": "0.25.0",
-  "packages/opentelemetry-exporter-zipkin": "0.25.0",
-  "packages/opentelemetry-instrumentation-fetch": "0.25.0",
-  "packages/opentelemetry-instrumentation-grpc": "0.25.0",
-  "packages/opentelemetry-instrumentation-http": "0.25.0",
-  "packages/opentelemetry-instrumentation-xml-http-request": "0.25.0",
-  "packages/opentelemetry-instrumentation": "0.25.0",
-  "packages/opentelemetry-propagator-b3": "0.25.0",
-  "packages/opentelemetry-propagator-jaeger": "0.25.0",
-  "packages/opentelemetry-resources": "0.25.0",
-  "packages/opentelemetry-sdk-metrics-base": "0.25.0",
-  "packages/opentelemetry-sdk-node": "0.25.0",
-  "packages/opentelemetry-sdk-trace-base": "0.25.0",
-  "packages/opentelemetry-sdk-trace-node": "0.25.0",
-  "packages/opentelemetry-sdk-trace-web": "0.25.0",
-  "packages/opentelemetry-semantic-conventions": "0.25.0",
-  "packages/opentelemetry-shim-opentracing": "0.25.0"
-}
+{"packages/opentelemetry-api-metrics":"0.25.0","packages/opentelemetry-context-async-hooks":"0.25.0","packages/opentelemetry-context-zone":"0.25.0","packages/opentelemetry-context-zone-peer-dep":"0.25.0","packages/opentelemetry-core":"0.26.0","packages/opentelemetry-exporter-collector":"0.26.0","packages/opentelemetry-exporter-collector-grpc":"0.25.0","packages/opentelemetry-exporter-collector-proto":"0.26.0","packages/opentelemetry-exporter-jaeger":"0.25.0","packages/opentelemetry-exporter-prometheus":"0.25.0","packages/opentelemetry-exporter-zipkin":"0.25.0","packages/opentelemetry-instrumentation":"0.25.1","packages/opentelemetry-instrumentation-fetch":"0.25.1","packages/opentelemetry-instrumentation-grpc":"0.26.0","packages/opentelemetry-instrumentation-http":"0.26.0","packages/opentelemetry-instrumentation-xml-http-request":"0.25.0","packages/opentelemetry-propagator-b3":"0.25.0","packages/opentelemetry-propagator-jaeger":"0.25.0","packages/opentelemetry-resources":"0.25.0","packages/opentelemetry-sdk-metrics-base":"0.25.0","packages/opentelemetry-sdk-node":"0.25.0","packages/opentelemetry-sdk-trace-base":"0.26.0","packages/opentelemetry-sdk-trace-node":"0.25.0","packages/opentelemetry-sdk-trace-web":"0.25.0","packages/opentelemetry-semantic-conventions":"0.26.0","packages/opentelemetry-shim-opentracing":"0.26.0"}
\ No newline at end of file
diff --git a/packages/opentelemetry-core/CHANGELOG.md b/packages/opentelemetry-core/CHANGELOG.md
new file mode 100644
index 0000000000..f5ff0c021c
--- /dev/null
+++ b/packages/opentelemetry-core/CHANGELOG.md
@@ -0,0 +1,18 @@
+# Changelog
+
+## [0.26.0](https://www.github.com/open-telemetry/opentelemetry-js/compare/core-v0.25.0...core-v0.26.0) (2021-09-09)
+
+
+### ⚠ BREAKING CHANGES
+
+* remove 'Http' from W3C propagator names (#2429)
+
+### Features
+
+* **opentelemetry-sdk-trace-base:** implemented general limits of attributes ([#2430](https://www.github.com/open-telemetry/opentelemetry-js/issues/2430)) ([feea516](https://www.github.com/open-telemetry/opentelemetry-js/commit/feea5167c15c41f0aeedc60959e36c18315c7ede))
+* **opentelemetry-sdk-trace-base:** implemented option to limit length of values of attributes ([#2418](https://www.github.com/open-telemetry/opentelemetry-js/issues/2418)) ([78a78c0](https://www.github.com/open-telemetry/opentelemetry-js/commit/78a78c093c2df24b66c47af4e037da9a6098fedb))
+
+
+### Bug Fixes
+
+* remove 'Http' from W3C propagator names ([#2429](https://www.github.com/open-telemetry/opentelemetry-js/issues/2429)) ([7d2c4aa](https://www.github.com/open-telemetry/opentelemetry-js/commit/7d2c4aaeb08e6c680f8b46cefcdfe955d7abe4b2))
diff --git a/packages/opentelemetry-core/package.json b/packages/opentelemetry-core/package.json
index 38b843ddd1..ed82c3bf93 100644
--- a/packages/opentelemetry-core/package.json
+++ b/packages/opentelemetry-core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opentelemetry/core",
-  "version": "0.25.0",
+  "version": "0.26.0",
   "description": "OpenTelemetry Core provides default and no-op implementations of the OpenTelemetry types for trace and metrics",
   "main": "build/src/index.js",
   "module": "build/esm/index.js",
diff --git a/packages/opentelemetry-exporter-collector-proto/CHANGELOG.md b/packages/opentelemetry-exporter-collector-proto/CHANGELOG.md
new file mode 100644
index 0000000000..47b652985d
--- /dev/null
+++ b/packages/opentelemetry-exporter-collector-proto/CHANGELOG.md
@@ -0,0 +1,8 @@
+# Changelog
+
+## [0.26.0](https://www.github.com/open-telemetry/opentelemetry-js/compare/exporter-collector-proto-v0.25.0...exporter-collector-proto-v0.26.0) (2021-09-09)
+
+
+### Features
+
+* OTEL_EXPORTER_OTLP_ENDPOINT append version and signal ([#2438](https://www.github.com/open-telemetry/opentelemetry-js/issues/2438)) ([dc574f7](https://www.github.com/open-telemetry/opentelemetry-js/commit/dc574f71685b90c3541c8ede9a91f852c8345fe7))
diff --git a/packages/opentelemetry-exporter-collector-proto/package.json b/packages/opentelemetry-exporter-collector-proto/package.json
index a5fd8ab5bc..ec046f29d2 100644
--- a/packages/opentelemetry-exporter-collector-proto/package.json
+++ b/packages/opentelemetry-exporter-collector-proto/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opentelemetry/exporter-collector-proto",
-  "version": "0.25.0",
+  "version": "0.26.0",
   "description": "OpenTelemetry Collector Exporter allows user to send collected traces to the OpenTelemetry Collector",
   "main": "build/src/index.js",
   "types": "build/src/index.d.ts",
diff --git a/packages/opentelemetry-exporter-collector/CHANGELOG.md b/packages/opentelemetry-exporter-collector/CHANGELOG.md
new file mode 100644
index 0000000000..7510c10df7
--- /dev/null
+++ b/packages/opentelemetry-exporter-collector/CHANGELOG.md
@@ -0,0 +1,8 @@
+# Changelog
+
+## [0.26.0](https://www.github.com/open-telemetry/opentelemetry-js/compare/exporter-collector-v0.25.0...exporter-collector-v0.26.0) (2021-09-09)
+
+
+### Features
+
+* OTEL_EXPORTER_OTLP_ENDPOINT append version and signal ([#2438](https://www.github.com/open-telemetry/opentelemetry-js/issues/2438)) ([dc574f7](https://www.github.com/open-telemetry/opentelemetry-js/commit/dc574f71685b90c3541c8ede9a91f852c8345fe7))
diff --git a/packages/opentelemetry-exporter-collector/package.json b/packages/opentelemetry-exporter-collector/package.json
index ada10fec40..d51837631c 100644
--- a/packages/opentelemetry-exporter-collector/package.json
+++ b/packages/opentelemetry-exporter-collector/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opentelemetry/exporter-collector",
-  "version": "0.25.0",
+  "version": "0.26.0",
   "description": "OpenTelemetry Collector Exporter allows user to send collected traces to the OpenTelemetry Collector",
   "main": "build/src/index.js",
   "module": "build/esm/index.js",
diff --git a/packages/opentelemetry-instrumentation-fetch/CHANGELOG.md b/packages/opentelemetry-instrumentation-fetch/CHANGELOG.md
new file mode 100644
index 0000000000..a1b8ea2ce4
--- /dev/null
+++ b/packages/opentelemetry-instrumentation-fetch/CHANGELOG.md
@@ -0,0 +1,8 @@
+# Changelog
+
+### [0.25.1](https://www.github.com/open-telemetry/opentelemetry-js/compare/instrumentation-fetch-v0.25.0...instrumentation-fetch-v0.25.1) (2021-09-09)
+
+
+### Bug Fixes
+
+* **opentelemetry-instrumentation-fetch:** fixed override of headers ([#2426](https://www.github.com/open-telemetry/opentelemetry-js/issues/2426)) ([dbfabd2](https://www.github.com/open-telemetry/opentelemetry-js/commit/dbfabd2bff113b6cfd17096b12f287472c30c751))
diff --git a/packages/opentelemetry-instrumentation-fetch/package.json b/packages/opentelemetry-instrumentation-fetch/package.json
index a18712648f..6c66b209c2 100644
--- a/packages/opentelemetry-instrumentation-fetch/package.json
+++ b/packages/opentelemetry-instrumentation-fetch/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opentelemetry/instrumentation-fetch",
-  "version": "0.25.0",
+  "version": "0.25.1",
   "description": "OpenTelemetry fetch automatic instrumentation package.",
   "main": "build/src/index.js",
   "module": "build/esm/index.js",
diff --git a/packages/opentelemetry-instrumentation-grpc/CHANGELOG.md b/packages/opentelemetry-instrumentation-grpc/CHANGELOG.md
new file mode 100644
index 0000000000..0b7bce7bce
--- /dev/null
+++ b/packages/opentelemetry-instrumentation-grpc/CHANGELOG.md
@@ -0,0 +1,12 @@
+# Changelog
+
+## [0.26.0](https://www.github.com/open-telemetry/opentelemetry-js/compare/instrumentation-grpc-v0.25.0...instrumentation-grpc-v0.26.0) (2021-09-09)
+
+
+### ⚠ BREAKING CHANGES
+
+* remove 'Http' from W3C propagator names (#2429)
+
+### Bug Fixes
+
+* remove 'Http' from W3C propagator names ([#2429](https://www.github.com/open-telemetry/opentelemetry-js/issues/2429)) ([7d2c4aa](https://www.github.com/open-telemetry/opentelemetry-js/commit/7d2c4aaeb08e6c680f8b46cefcdfe955d7abe4b2))
diff --git a/packages/opentelemetry-instrumentation-grpc/package.json b/packages/opentelemetry-instrumentation-grpc/package.json
index 77ec2844ec..1cd3224288 100644
--- a/packages/opentelemetry-instrumentation-grpc/package.json
+++ b/packages/opentelemetry-instrumentation-grpc/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opentelemetry/instrumentation-grpc",
-  "version": "0.25.0",
+  "version": "0.26.0",
   "description": "OpenTelemetry grpc automatic instrumentation package.",
   "main": "build/src/index.js",
   "types": "build/src/index.d.ts",
diff --git a/packages/opentelemetry-instrumentation-http/CHANGELOG.md b/packages/opentelemetry-instrumentation-http/CHANGELOG.md
new file mode 100644
index 0000000000..44a7e707b3
--- /dev/null
+++ b/packages/opentelemetry-instrumentation-http/CHANGELOG.md
@@ -0,0 +1,8 @@
+# Changelog
+
+## [0.26.0](https://www.github.com/open-telemetry/opentelemetry-js/compare/instrumentation-http-v0.25.0...instrumentation-http-v0.26.0) (2021-09-09)
+
+
+### Features
+
+* **instrumentation-http:** add diag debug on http request events ([#2126](https://www.github.com/open-telemetry/opentelemetry-js/issues/2126)) ([a1875b6](https://www.github.com/open-telemetry/opentelemetry-js/commit/a1875b67852cdc1004fee144ce5792f33ad2fcdb))
diff --git a/packages/opentelemetry-instrumentation-http/package.json b/packages/opentelemetry-instrumentation-http/package.json
index 1974c2ab75..241c014f25 100644
--- a/packages/opentelemetry-instrumentation-http/package.json
+++ b/packages/opentelemetry-instrumentation-http/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opentelemetry/instrumentation-http",
-  "version": "0.25.0",
+  "version": "0.26.0",
   "description": "OpenTelemetry http/https automatic instrumentation package.",
   "main": "build/src/index.js",
   "types": "build/src/index.d.ts",
diff --git a/packages/opentelemetry-instrumentation/CHANGELOG.md b/packages/opentelemetry-instrumentation/CHANGELOG.md
new file mode 100644
index 0000000000..021388cc1c
--- /dev/null
+++ b/packages/opentelemetry-instrumentation/CHANGELOG.md
@@ -0,0 +1,8 @@
+# Changelog
+
+### [0.25.1](https://www.github.com/open-telemetry/opentelemetry-js/compare/instrumentation-v0.25.0...instrumentation-v0.25.1) (2021-09-09)
+
+
+### Bug Fixes
+
+* handle missing package.json file when checking for version ([#2450](https://www.github.com/open-telemetry/opentelemetry-js/issues/2450)) ([3acebdc](https://www.github.com/open-telemetry/opentelemetry-js/commit/3acebdcc070cf736e932c9ab9b683eb047c5cabc))
diff --git a/packages/opentelemetry-instrumentation/package.json b/packages/opentelemetry-instrumentation/package.json
index a67e140633..bc4588e806 100644
--- a/packages/opentelemetry-instrumentation/package.json
+++ b/packages/opentelemetry-instrumentation/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opentelemetry/instrumentation",
-  "version": "0.25.0",
+  "version": "0.25.1",
   "description": "Base class for node which OpenTelemetry instrumentation modules extend",
   "author": "OpenTelemetry Authors",
   "homepage": "https://github.com/open-telemetry/opentelemetry-js#readme",
diff --git a/packages/opentelemetry-sdk-trace-base/CHANGELOG.md b/packages/opentelemetry-sdk-trace-base/CHANGELOG.md
new file mode 100644
index 0000000000..4befc4d217
--- /dev/null
+++ b/packages/opentelemetry-sdk-trace-base/CHANGELOG.md
@@ -0,0 +1,18 @@
+# Changelog
+
+## [0.26.0](https://www.github.com/open-telemetry/opentelemetry-js/compare/sdk-trace-base-v0.25.0...sdk-trace-base-v0.26.0) (2021-09-09)
+
+
+### ⚠ BREAKING CHANGES
+
+* remove 'Http' from W3C propagator names (#2429)
+
+### Features
+
+* **opentelemetry-sdk-trace-base:** implemented general limits of attributes ([#2430](https://www.github.com/open-telemetry/opentelemetry-js/issues/2430)) ([feea516](https://www.github.com/open-telemetry/opentelemetry-js/commit/feea5167c15c41f0aeedc60959e36c18315c7ede))
+* **opentelemetry-sdk-trace-base:** implemented option to limit length of values of attributes ([#2418](https://www.github.com/open-telemetry/opentelemetry-js/issues/2418)) ([78a78c0](https://www.github.com/open-telemetry/opentelemetry-js/commit/78a78c093c2df24b66c47af4e037da9a6098fedb))
+
+
+### Bug Fixes
+
+* remove 'Http' from W3C propagator names ([#2429](https://www.github.com/open-telemetry/opentelemetry-js/issues/2429)) ([7d2c4aa](https://www.github.com/open-telemetry/opentelemetry-js/commit/7d2c4aaeb08e6c680f8b46cefcdfe955d7abe4b2))
diff --git a/packages/opentelemetry-sdk-trace-base/package.json b/packages/opentelemetry-sdk-trace-base/package.json
index 2d7a0102bd..5fc74fe5ee 100644
--- a/packages/opentelemetry-sdk-trace-base/package.json
+++ b/packages/opentelemetry-sdk-trace-base/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opentelemetry/sdk-trace-base",
-  "version": "0.25.0",
+  "version": "0.26.0",
   "description": "OpenTelemetry Tracing",
   "main": "build/src/index.js",
   "module": "build/esm/index.js",
diff --git a/packages/opentelemetry-semantic-conventions/CHANGELOG.md b/packages/opentelemetry-semantic-conventions/CHANGELOG.md
new file mode 100644
index 0000000000..413e72e1c2
--- /dev/null
+++ b/packages/opentelemetry-semantic-conventions/CHANGELOG.md
@@ -0,0 +1,8 @@
+# Changelog
+
+## [0.26.0](https://www.github.com/open-telemetry/opentelemetry-js/compare/semantic-conventions-v0.25.0...semantic-conventions-v0.26.0) (2021-09-09)
+
+
+### Features
+
+* upgrade semantic conventions to the latest 1.6.1 version ([#2456](https://www.github.com/open-telemetry/opentelemetry-js/issues/2456)) ([bec7791](https://www.github.com/open-telemetry/opentelemetry-js/commit/bec77913bc4bff2a887085ab96085157c0085546))
diff --git a/packages/opentelemetry-semantic-conventions/package.json b/packages/opentelemetry-semantic-conventions/package.json
index fda3f4f414..29c7d52c5b 100644
--- a/packages/opentelemetry-semantic-conventions/package.json
+++ b/packages/opentelemetry-semantic-conventions/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opentelemetry/semantic-conventions",
-  "version": "0.25.0",
+  "version": "0.26.0",
   "description": "OpenTelemetry semantic conventions",
   "main": "build/src/index.js",
   "module": "build/esm/index.js",
diff --git a/packages/opentelemetry-shim-opentracing/CHANGELOG.md b/packages/opentelemetry-shim-opentracing/CHANGELOG.md
new file mode 100644
index 0000000000..bcf2fec9d0
--- /dev/null
+++ b/packages/opentelemetry-shim-opentracing/CHANGELOG.md
@@ -0,0 +1,12 @@
+# Changelog
+
+## [0.26.0](https://www.github.com/open-telemetry/opentelemetry-js/compare/shim-opentracing-v0.25.0...shim-opentracing-v0.26.0) (2021-09-09)
+
+
+### ⚠ BREAKING CHANGES
+
+* remove 'Http' from W3C propagator names (#2429)
+
+### Bug Fixes
+
+* remove 'Http' from W3C propagator names ([#2429](https://www.github.com/open-telemetry/opentelemetry-js/issues/2429)) ([7d2c4aa](https://www.github.com/open-telemetry/opentelemetry-js/commit/7d2c4aaeb08e6c680f8b46cefcdfe955d7abe4b2))
diff --git a/packages/opentelemetry-shim-opentracing/package.json b/packages/opentelemetry-shim-opentracing/package.json
index 6c1348d80c..ece9007d86 100644
--- a/packages/opentelemetry-shim-opentracing/package.json
+++ b/packages/opentelemetry-shim-opentracing/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opentelemetry/shim-opentracing",
-  "version": "0.25.0",
+  "version": "0.26.0",
   "description": "OpenTracing to OpenTelemetry shim",
   "main": "build/src/index.js",
   "types": "build/src/index.d.ts",