It's in super-beta right now and has hardly any of the features of the Mac Version. Only split view and spaces work. No little arc, no easels, no Arc Max, no popup, no search discovery stuff. I'm still a happy user, but don't go into it expecting the exact same thing today.

For clarification, It is available for beta testing where you have to apply [1]. I am not part of thus test but judging from the survey questions it seems it is not ready for everyday usage yet. Though I maybe wrong.

[1] https://www.isarconwindowsyet.com/

Oh interesting, I wasn't aware. I'll have to try my hand at beta access, and try it out. I enjoyed my time with it on Mac. But use too many different OS's to daily drive it.