Bungie says, No to other platforms.

[ssj12]

rickytan said:
I wouldn't complain if Halo 4 was on PS3 but i won't hold my breath

 Halo's done.. now it's the new triligy starring MC. Come now, did you not read the books or play the games? It wont be called Halo 4 as Halo was al about the 7 rings. The new games wont be.