GameSpy friend PlanetFortress has word about TF2 from Valve:
TF2 is in full development here at Valve, and we will be releasing new information on the project in the coming months.Perhaps this implies that TF2 was started over for the fourth time (HL engine, then newer HL engine, then new engine) or maybe it just means that they're in full development. The relevance to CS, for comment whores, is that CS2 is likely to be a TF2 mod or at least use its engine.