Does anyone know about future maps?

I was wondering if anyone knew anything about future maps to be released for versus and single player.

I've seen videos for user made ones, but i don't know anything about valve maps.

i even heard that they weren't releasing dead air and the other one for versus due to imbalance for the two sides

anyone heard anything?

Ive heard 2 new campaigns are coming out...
heard this while in game so i cant keep it as a creditable source...

And thats all i know.... But thats what ive heard...

well, when the scout update comes out it will keep my busy