I hate to be that guy but This has been covered extensively in the other threads about it…
No one knows when,
they are aware and
Yes, you can only currently choose certain levels of Magnification/Zoom (Win) within Cubase.
I’ve been on my 4k for almost 7 years now and the amount of real estate on 4k vs 1080 is well worth the current issues. iow, I will never go back to a1080 workspace. If there are “many studios” it’s because they can’t not that they won’t.