I played through each of the new maps this morning for one match each, except for Killhouse which didn't seem to be in the rotation. Someone online speculated that it might be for Free-for-All mode only and not available on Team Deathmatch.
Creek is going to be one of my favorite maps I think. It's pretty large with several houses, a ravine with caves, waterfall running through it, and some nice hills. It's going to be a sniper's paradise. I switched to a sniper rifle half way through and with all the green on the level, it's still difficult to locate the enemy.
Chinatown looks like it could be fun once you learn the map. I think all of us were playing it for the first time so it seemed like everyone on both teams were just randomly running around. At one point someone on my team said that a lot of the other team were over by the Chinese restaurant, which was funny because I think there's like 3 of them in the map.
Broadcast was......confusing. I'm not sure I'll like that map. Though I remember the single player mission, it's going to take a while to get used to it. It seemed like all of my team was "stuck" in the TV station building and whenever we went outside we were

. Same thing happened whenever the other team actually made it into building, they were quickly

.
I'll have to load these maps in a Private match by myself and go into the mode where you can fly around the level to get better aquatinted with them I think. I wish I'd know about the ability to do that when I first started playing.
My XBL name is Biggie Munn by the way.

I bet most people think I like rap or something.