Valve never seem to take traditional routes for announcing new games. Their head of [Insert Appropriate Title Here], Doug Lombardi, likes to leak teeny bits of information to people when they're least expecting it. To Kikizo, in an interview published last night, he dropped in something about Episode Three. Like you do. Apparently we could hear news about the game before the end of the year.
During the interview, Kikizo nonchalantly ask about the next episode, and receive a peculiarly forthcoming response.
Kikizo: When are we going to start to hear about Episode Three? Because the gaps seem to be quite long based on the first couple of episodes.
Lombardi: Yeah, the next time you play as Gordon will be longer than the distance between HL2 to Ep1, and Ep1 to Ep2.
Kikizo: Won't you announce or show anything on Episode 3 this year?
Lombardi: We may at the very end of the year.
Those sneaky rascals. And what's that comment about playing Gordon, eh? Might we... could it be? I haven't a clue.