Adds info about Teams preview rings (#947)

blog/2022-07-01-force-preview-in-teams-in-browser.mdx

@@ -33,9 +33,21 @@ The query string to use is `?ring=ring3_6`. We can bookmark the following link i
 https://teams.microsoft.com/_?ring=ring3_6
 ```
 
-## Preview ring
+## Other rings
 
-At the moment the only non-default ring I'm aware of is _ring3_6_.
+Until February 2024 the only non-default ring I was aware of was _ring3_6_. However, Microsoft has published the rings list on the article about [Usage report of new Teams](https://learn.microsoft.com/en-us/microsoftteams/new-teams-usage-report).
+
+The rings are:
+
+* Production - Ring 4
+* Public Preview - Ring 3.6
+* TAP users - Ring 3
+* Developer Preview - Ring 1.6
+* TAP admin users Ring 1.5
+
+From what I checked, enforcing rings you don't have access to is not working.
+
+## Client behavior for other rings
 
 When the application loads in full, the preview settings will look the same as when you activate the preview from the interface: