In a few weeks, 1% of creators already using YouTube Studio will no longer see the ‘back to Classic’ button – you’ll be notified 1st & can still access Classic features you need! This won’t apply to everyone else until early next year. More info → https://yt.be/help/a7mG
So once Classic Studio is removed, it will be impossible to schedule a video, or upload it as private, and then make it public later? Because neither of those things actually work for me in Studio Beta. (and a lot of other things, possibly because I got 6000+ videos)