okay all i want to know is if he is returning and where? can someone please be a little specific about yes or no. i just need to be sure because if he does i am expecting great concept arts for him… yeah…yeah… will be so AWESOME…$#@% yeah!!!
I think he must. He’s a freaking boss. And plus, he’ll be important due to the whole Covenant divide issue.
But honestly, DUDE ARBITER!
They’ve said his story isn’t over yet… That’s all we know for now. If he’ll be in H4 or possibly H5/6 is not confirmed yet 
Not yet, sorry.
Halo 5 most likely.