Nope.
Oh, and further update on Zombies... It's a great game, if you're a fan of board game style games. The board changes every time you play making each play session unique. Sometimes you'll have the buildings you need close to each other, and then can make a break for the helicopter, or else for other games, everything will be so scattered that you will likely die multiple times going anywhere. It really does make this game fun. :lol
I'm hoping that IF there's a sequel, that they release it after MS hopefully eventually allows real-time multiplayer. This game would be great for that, but pass and play is probably good for most people for now.
On that note, I'm a bit bummed that there's been no rumors or anything about allowing real-time multiplayer. It seems that's something that we hopefully can get in 2012.