More COD4 Confirmed Maps:
Overgrown
Bog

IW's Studio Head on COD4 being played more than COD:IW
”You’re gonna scratch the kind of more nostalgia Modern Warfare itch with the remaster, but all the kinda cool new stuff in Infinite Warfare is really exciting too. Obviously the Infinite Warfare experience is big with all the new bells and whistles, but it’ll be fun to go back to Modern Warfare multiplayer as well.”

(LMAO, the "kinda cool" new stuff)

Rumors:
COD:IW will have a beta before release.