As much as I love id software. Doom 4 will be out in next 2 years ish.
Of which I will be playing 720. So unless doom 4 is changed and released on Xbox 720 I'll be playing the 360 version on a 720. Hardly impressive id that doom 4 will look old when it arrives because we will have 720 software our by then.
Id rage was great but your late to the party this gen. Move doom 4 to development on 720 when you have dev kit in march.
In fact that is exactly what they will do. Doom 4 will move development to Nexgen Xbox. Watch this space. Especially if they are right now saying it might be out in 2014.