I believe they should either release it for both as a few people have suggested or just release i for the 360. It already has the base to sell millions of copies and its the beginning of a new trilogy in the halo story line, bring it out just before the "720"s release and you'll have more halo fans wanting to buy earlier for a higher price.

i agree. halo 4-6 and gears 4-6 should come on nextbox

No i think Halo should end on the 360.

if Sony and MS reveal there consoles and the lineups scheduled for release they can hold off till 2014 and continue to push PS3 and 360.

its giving you something to look forward to.

OT: no they want 360 to stay ahead of PS3 and they think Halo4 will give then that advantage.

Halo altogether?

Halo 4 is obviously going to be the poster child for "Forward Compatibility". It will release next year, either on 360 alone or both systems if there is launch next. 720 version will have tremendous graphical superiority to the 360 version.