OK, seriously Valve has yet to make a bad game, Episode 1 was the "worst" one yet and yet it still had a longer and better campaign than COD (infinite respawning enemies is a game breaker for me, if I can only only advance the game by reaching a certain point on the map then its no longer interactive and is just a really bad Michael Bay movie).
Valve doesnt make announcements or press releases because the press and gamers hold them too what they release, but Valve doesn't keep whole chapters sometimes. Valve is one of the few developers not afraid to throw out months of work when the product is not up to a certain standard. If they had released media based on thrown out bits/sequences/game mechanics, everyone would be bitching too. Best to just keep quiet until late beta where they are just fixing up code and stuff.
Really everyone, all complaining will do is get Valve to maybe release a game earlier when it is not ready and suffers for it. When Valve releases a game, go to steam and exchange your couple days worth of currency for their years of hard work and enjoy the product. You are not entitled to anything else, even though Valve does tend to add hours of more gametime for free (l4d1 and 2 campaigns, TF2's everything, HL Lost Coast, CS:Source)