Well, regardless of anything, Valve made a huge mistake by pretending that the September 30th release date was still on up until the last minute. If they'd said in the beginning of September that they wouldn't have met it, I'd be less annoyed. Having said that, I don't mind waiting a few more months to get a better game.
Back on topic though... this is great news for Sven Co-op. Glad they were/are still planning on releasing Sven Co-op via the "traditional" method (non-Steam). I'm still waiting for Single Player to not require me being online before I try installing Steam.