Plasma 6 landed in opensuse. However, I recommend to do it in tty because if you do it in plasma the upgrade will be incomplete because the shell will crash in the middle of update without installing all. In case this happen to anyone, just reinstall plasma 6 pattern and it will go without problems
I just installed this accidentally by clicking update all in the Discover app. It seems like it was successful and didn’t fail halfway, but I’m still confirming that. Everything seems to be working as of now.
I had to reset a lot of settings, unfortunately.