Oh ! Is Teams still in Beta?

While troubleshooting Whiteboard issue (report: Error: something went wrong retrieving your board), a term "Beta" hit to my eyes on the logs. When I took out the diagnostic logs (Ctrl + Alt + Shift + 1) from teams and run following command prompt query:

Select-String -Path *txt -Pattern "beta" | Group-Object -Property filename | ft count, name

Count Name
----- ----
   42 MSTeams Diagnostics Log 4_27_2020__9_23_03_PM.txt

If you take a look what kind lines there is with "beta", the most of them are URLs. But isn't that a strange? Do we all run beta code with or without our knowledge?