The original Exit was released on XBLA in October of 2007, and Exit 2 has been released previously on the PSP. According to xbox.com this version has an additional 30 stages exclusive to the Xbox 360 version. Both Exit 2 and the original Exit can be downloaded for 800 Microsoft Points.
Here are some of the features from xbox.com
* More characters and excitement: Rescue people from danger all over the world, and welcome "Macho" and "Dog" as new companions, joining those from the previous game.
* More challenges: Over 10 new challenges have been added, increasing the puzzle and action elements even further.
* Massive gameplay: This massive game consists of 240 stages with an additional 30 original Xbox 360 stages available for download.
Sorry about the lack of pictures folks, thanks to Silverlight I can't just throw pictures on here. You'll just have to check them out here.