His name is Harold Ryan, (former Bungie CEO/founder) and Franky just tweeted that. This would be SUPER AWESOME FOR HALO. We got the Batman Arkham series writer and now if we get Ryan. Don’t call it a come back.
I think Harold is about to announce a new game with his games studio Probably Monsters, don’t think it’s anything related to Halo 
I think that’s just Franky supporting him at his new studio. That’s the way I read it anyway, 343i already has a studio head.