I doubt it. Halo has been one of Microsoft's console sellers and I think it will continue to be, I don't think they'll port it to PC due to xbox one sales. Honestly also based on Master Chief collection and its failures ( huge problems with match making, I've been searching for 3 hours and been unable to find a game, 343i stated if unable to find a game after 5 minutes go back to lobby and try again, and I have been still nothing, being kicked out of campaign) I don't think they should, the servers right now just aren't working, host's for MP games are being migrated to players, and there is way no many problems for such a large release, imagine what would of happened if they also released for PC? it would take forever for everything to be resolved. Plus would halo be multiplayer also on PC? would it be a separate server? all the games are set up for Xbox engine I can't imagine how much money it would cost to port them all to PC.