In response to user feedback regarding challenges when joining Teams meetings, Microsoft has announced the rollout of a new Microsoft Teams pre-join experience. This process should be completed by the end of this September. This new experience is designed to make it easier for users to make certain selections before entering a meeting.
The new pre-join screen includes easier discovery for audio, video, and device selection configurations before joining a Teams meeting. Prior to joining a meeting, Teams opens a window with all of the video and audio controls for the meeting. This new experience allows users to conveniently select all of their choices and settings before-hand, preventing your audio and visual from not working as desired once a meeting has started. One of the most notable changes here is that, after this update, you will be able to select your background filter before you enter your meeting.
This is one of the many anticipated features coming to Microsoft Teams.