From Call of Duty: Modern Warfare 3's Blog:
Activision did not release details of Modern Warfare 3's competitive multiplayer mode yet, keeping that reveal for the Call of Duty XP event on Labor Day weekend. The mode and its maps will probably be the favorite component of Modern Warfare 3, because of the dominating overall performance of previous Modern Warfare and Call of Duty games. Although the maps have not been revealed, it is likely that the multiplayer won't be drastically diverse from that of recent franchise installments, pitting gamers versus each other in first person shooter competition, using a combination of weapon upgrades and gameplay perks.
"How you play team deathmatch is all about your sightlines, your viewpoints-like I said, the hotspots," Bowling added. "I'm coming around the corner. I don't want to have to worry about being shot from 50 different angles. I want to be able to know, 'OK, I cleared the top floor, I cleared the second floor, I cleared the base, I'm good in this area. OK, now I'm coming through this doorway, I have to watch this doorway, this alleyway and this spot.' And then, when you're playing objective [matches], you need to be able to know the routes and break them down in your head as you play the areas. Like Search and Destroy… I know I've cleared this area. There's no way this guy can get there. And then going in an adding the fun secret stuff that people find three months into playing, like 'Did you know if you run up the tail of the plane in Afghan you can leap to the top of the mountain instead of circling around to the route that everyone is covering?'"
