The source (don't forget to check it) is dsogaming.com
Halo 5 Series Director Frank O’Connor: “Plenty of chance that Halo 5 could appear on the PC”
As Frank O’Connor said when he was asked whether Halo 5 will come to the PC (head over at 1:13:00).
“You know, Microsoft has made a huge commitment trying sort of… I think normalize the Windows experience across multiple platforms. You see the elements of Windows 10 are going to appear in Xbox and Cortana and stuff like that. There is plenty of chance that Halo 5 could appear on the PC. Nothing to announce at this point… you know, we developed the game on an Intel platform. It wouldn’t be the hardest thing in the world to move it to PC and take advantage of PC stuff. But nothing I announce today on this chat.”
Twitch video is on the source
It’s pretty obvious that Frank O’Connor would be really interested in bringing Halo 5 on the PC. The big question now is whether Microsoft is interested in such a thing or not.