After allowing you to blur the background when joining a Teams meeting, you can now set your own background (well quite not fully yours).
You can now choose from a pre defined set of backgrounds – being able to set your own is coming soon.
To set your background just hit the Options (…) button and choose Show background effects, you can then choose from a pre defined list of backgrounds
UPDATE 1 a colleague of mine just let me know you can copy your own background file in
%userprofile%\AppData\Roaming\Microsoft\Teams\Backgrounds\Uploads and it will be available to choose from the Show background effects list
UPDATE 2 another colleague of mine just let me know the same tip for Mac use, you can copy your own background file in
/users/<your username>/Library/Application Support/Microsoft/Teams/Backgrounds/Uploads and it will be available to choose from the Show background effects list