Will it be possible to play the beta through GeForce Now? Now when starting BG3 there is a beta in the list, but GeForce now requires to run it separately

If you're in the Closed Beta, you should be able to launch it through GFN! Please do report to our Support Team if you experience any issues.
Update on this: At the moment it's only possible to play the beta on PC via Steam, we will let you know if this changes.
Just a quick note, since the feedback section on Discord is closed: There are still doors, you can't shoot through or fire a spell through - in Grymforge for example.