That's already true for most PC VR headsets.

Edit: I missed the point here, see reply.

Standalone? No. Most PC VR headsets require a PC. The Steam Frame will let you play 2D games, with no phone or PC attached.

Also VR is just not somewhere you want to be.. Its worth it in short bursts for playing Alyx or golf with a friend, but it's not comfortable, you wanna get that thing off asap.. Playing a conventional 40+ hour game in it would be awful.

I even downloaded some 3d movies to try watching in VR, pacific rim and avatar movies (there's not that many 3d movies) but I didnt get far into them, the 3d was more of a distraction than anything. Flat screen is just superior imo.

Hopefully Valve make a sequel to Alyx to help sell the new headset.