Dec 15 2019
Last week my MTR system updated to 126.96.36.199. I checked my unit this morning and it seems to have taken an update and is now running 188.8.131.52.
Can't see any release info here https://docs.microsoft.com/en-us/microsoftteams/room-systems/srs2-release-note
Dec 16 2019
We also got version 184.108.40.206 last week which caused SrS not being able to fetch the calendar from Exchange. Today I checked and we now have been updated to 220.127.116.11 and now the error is gone.
So for us it seems like a bugfix :)