How about this Rob?
So before TeamXbox went on holiday break, they stuffed their readers' stockings with this delicious rumor. Already reported on by the Official Xbox Magazine, Microsoft and Bungie are planning to release Halo 2.5 as a launch title for the Xbox 2. TeamXbox uncovered some of the first details regarding the game from an unidentified source. "Halo 2.5 will be an Xbox 2 launch title and is going to run in HDTV resolution with new, improved textures and graphical effects. All the stuff that people expected from Halo 2 but didn't make the cut will be there. The technology that powers Halo 2 has been designed from day one to take advantage of the next generation hardware," the insider said. "In Halo 2, the Xbox was pushed to its limits but now the game will reach new heights with the advanced hardware."
If that wasn't enough, the source floated this out. "Now, here is the twist. Halo 2.5 will come preloaded with the optional HDD. It'll be one of the two reasons to get the Xbox 2 that comes with a hard drive. The other reason... well, you'll just have to wait." Dun dun duuuuun!