I thought this was going to be some development news with Wayland compositing going further: https://emacsconf.org/2022/talks/wayland/. Maybe it's because 29.1 was on my mind with the full Wayland client support being released.

If you want to just run one application in a modern way (yes, I'm assuming you agree that Wayland is desirable), then check out https://www.hjdskes.nl/projects/cage/.