I cant say whats happening for the future of Unity VR but i can say what happened to the previous course.
With unity VR updating so rapidly at the time the course was made the quality of the course was not up to standard with what gamedev.tv wanted to produce.
Now as said i cant say what will happen in the future as i cant speak for Sam and the team.
This said however i didnt want you guys to think that it was a decision to only go with unreal and the unity course was removed for any reason other than quality control.
The unreal course for multiplayer was a stretch goal of the unreal course but it soon became apparent that the course was too big to contain both. So a separate course had to be made as the promise was made to the kickstarters of the course.
Sam i hope will give some more information on the future of unity with VR but i haven’t got back to the unreal multiplayer course myself so its likely he is still making content there at the moment.
TLDR Unity course didnt meet quality control. Unreal VR promised stretched goal within the unreal course so made separate,
Please note this is from the student side of me following the prior announcements and video updates (I think bens wistia @Rob you know the links?)