Halo: CE Anniversary Edition will feature both the original and the new HD version of Halo

Now here is something interesting. The much anticipated Halo: CE Anniversary will actually feature both the original and the HD remake version of Halo: Combat Evolved. Players will be able to switch between these two modes with the press of a button and see how the game looked when it was first released on Xbox. Think of it as the ‘switch functionality’ of the recent Monkey Island HD remakes and in our opinion, all HD remakes should feature a similar option.
Halo: CE Anniversary is developed by 343 Industries and is currently scheduled for a November 15th release exclusively on X360!
Halo: Anniversary Campaign Demo