I could care less if valve releases HL3 now. They will NEVER EVER be able to make a game that lives up to the hype and expectations of all these years they have been trolling/teasing us. Now they are irrelevant to me as game devs. I dont really care for portal and L4D was decent with friends, DOTA 2 though is terrible. My good will for valve as a developer has almost died but I love what they have done with steam.
There is no hype for a HL3 game from anyone, especially Valve. Hype would be releasing some info, which Valve simply refuses to do.
Also, its "couldn't care less"