RandV
It's a wolf v2.0
As someone who doesn't really follow them too closely this is more or less what I had always been expecting from Valve concerning Half Life. Not really sure specifically why they left Episode 2 off an a cliff hanger and give us episode 3, but concerning Half Life 3 my impression was that with HL1 and HL2 being ground breaking each in their own right they didn't want to release a HL3 that would just to be an iterative improvement on HL2 and not all that different from all the other shooters on the market. Rather, they were going to sit on HL3 till they could make it as ground breaking as HL1 and HL2 were, and the route to get there would be through VR.