A lot of you are noticing the preexisting automatic detection feature from 2022 [1], which I also worked on. That's NOT what this newly announced feature is. The new feature supports full import/export, but it's still rolling out so you're likely not seeing it yet!
Hope you like it once it reaches you :)
[1] https://workspaceupdates.googleblog.com/2022/03/compose-with...