They aren't so much announcing the changes as changing the time on the community page.
http://steamcommunity.com/games/L4D2/events/55327883716288366?p=1That should tell you when it's supposed to be released in your time zone. Other than that the only thing they've said is what blue posted already. Here
http://store.steampowered.com/news/3005/It's really the lack of communication that has me peeved. It's true that it's just a game. But this is a company that takes games *seriously*. In the end, though...there's really no excuse and maybe they realize that. The insult is that xbox players have been playing this all day.
This comment was edited on Oct 28, 2009, 02:02.