I was feeling the same when s10 got it first and was desperate. Now I am upgraded but it doesn't look any different.. no new gesture navigation like pixel launcher.. only dark mode works on few more apps than before and it asks for location in background permission..
It is not an update.
IT is a programme for testing an operating system.
Stability and performance are not guaranteed and could be unstable.
You install it and use it at your own risk while the system reports itself any conflicts to the programmers.
It's been rolled out in Germany, and the phones that are unlocked. This is being done so if something major was to happen early on the results would not be as catastrophic. It's coming, rest assured.