Looks like you may want to wait on picking up those additional maps for Gears of War 2. Just announced, there will be a retail package which includes all the current DLC, plus several new maps and a Director’s Cut of one of the levels.
Thanks, Kotaku.
This appears similar to the announcement that the Halo ODST stand-alone expansion may include all of the released Halo DLC as well.
So, kids, remember when maps used to be free? Hell, Dawn of War 2 is getting a new 2vs2 mode with additional maps. That’s even a Game of Windows LIVE game (PC DLC supported and even used for the pre-order goodies).