Hey all! This time, it really looks like we are gonna make it for the GIMP 3 release on Sunday (with 98% completion of the milestone and only 3 remaining reports in there), unless we really discover some very ugly last-second issue. This means that the next 3 days are the days where translators want to push updates if you want to see them available in our first release in the v3 series! 😄
For the stuff that supports non-destructive editing, yes. It also allows you to easily update the transformation.
Unfortunately not everything supports it yet. Notably, resizing and rotating do not. Hopefully it will be added soon.