Drum roll please....
It's Lockout! Here's a glimpse of it, in all of its high-definition glory.
"As one of the flagship Halo 2 tournament maps, Lockout was home to a wide host of game types, including Free-for-All, Oddball, King of the Hill, 1-Flag CTF, and of course, Team Slayer. Get ready to return to this classic battleground as Lockdown, part of the Halo 2 Anniversary multiplayer experience in Halo: The Master Chief Collection," a Microsoft rep said (via GameSpot).
What do you think of this addition? A no-brainer, right? Let us know in the comments below what you think the sixth and final map will be? I've got my fingers crossed for Ivory Tower.