[firtoz]

I worked at Unity prior to the Weta acquisition.

If the button says "contact us" or they ask for a waitlist, they haven't actually built or prepared much for release and are gauging for interest before likely starting to take engineering etc action on it.

Caveat: things may have changed a bit after my time.

[timoni]

I work at Unity. Everything’s either in late beta or ready for launch.

[toxicFork]

I confirm that timoni does work at Unity, I'd trust their word.