Should all be in place. Even nvidia driver support. It's one of the rare cases where I actually support nvidia on a technical level, that is, having explicit sync is good. I can also understand that they didn't feel like implementing proper implicit sync (hence all the tearing etc) when it's a technically inferior solution.
OTOH, they shouldn't have bloody waited until now to get this through. Had they not ignored wayland for a literal decade this all could've been resolved before it became an issue for end-users.
It most likely is on the technical level, just shipped by default and integrated into standard settings instead of the add-on ones. And it's going to be opt-in, so you won't have to go into
about:config
to disable it. Speaking of: You're looking forextensions.pocket.enabled
, it should befalse
. And before you say "muh diskspace" it's probably like 5k of js and css or such.