Looks like as much as the 360 community wants the PC stuff as a downloadable update/expansion, but the more that we ask for it the more we get bashed over the head about it not coming over. Here’s what Rod Fergusson had to say
“There is no plan to provide the PC exclusive content to Xbox 360 gamers for a number of technical reasons. One is simply the size and scope of the new content which would be difficult to deliver as an update. But more importantly, Gears of War for Windows was not created with the same version of Unreal Engine 3 as Gears of War for 360. We wanted to take advantage of all the latest and greatest optimizations and features that are constantly being added to UE3 and as such, this new content is not easily compatible with the Xbox 360 version.”
So yeah sorry, it’s not happening, sucks but you’ll live.