For Wayland users DMA-BUF video textures are now used when the Video Acceleration API (VA-API) is enabled.

I personally saw a number of regressions[0] on Debian testing for video playback, on the beta releases for 79 bit it largely seems to have settled down now.

[0] particularly this one: https://bugzilla.mozilla.org/show_bug.cgi?id=1643855

Wow, that was quick.

The update isn't even available for me yet.