Hi @rasta,
you can get the current iso from Verifying Qubes 4.1 weekly builds, maintained by @fepitre . I checked the one from April 10, but, as I just saw, there is a new one from April 17.
QWT is running just like on the old iso, neither better nor worse. I cannot and will not move to LTSC; even if it has a better performance, I won’t give M$ a $ 
I enabled the testing repositories and installed kernerl-latest, which gave me 5.11.12 after update; it’s
running fine, but I have no Nvidia driver, so I don’t know what happens in this configuration.
Have a nice weekend, and much success!