When, if ever, will Microsoft release a PS All Stars/ Super Smash Bros. Brawl type game?

[cusman]

man-bear-pig said:

Now that Nintendo and Sony have both released games featuring the stars of their respective franchises, I'm just wondering when/if Microsoft will ever follow suit. Do you think they will? If so, when? If not, why?

Yes, it's going to be called:

Kinect All Live Halos Gears Forza