A number of keen observers have noticed that the Xbox Halo 4 listing has a very peculiar entry at the bottom of the page.
Yes, that does indeed say "system requirements" there. Now, it's leading many to believe that the game may be coming to the PC at some point. Keep in mind that there has been no mention of a PC version of the game made anywhere. However, Halo 2 was pushed alongside the launch of Windows Vista to promote DirectX 10 and higher adoption of the new OS. With Windows 8 coming out, could history be repeating itself and Halo 4 will come to PC but only for Windows 8 users?
That, or it could simply be a reference to how the game will require an install on the Xbox 360. Though, it was also already mentioned that it will be an 8GB install in previous news reveals. Either way, it's still an interesting possibility that we'll see Halo 4 popping up on Windows 8 and used to promote the OS's Live integration.