When can we expect some Downloadable Content? Seems like they would have released some by now? Sure wish they would at least release some different arena!
DLC is on its way. It's in the process of certification. It's speculated that the DLC should be out sometime this month, but for now it's all in the hands of Microsoft. Content includes two new maps, Club tags (for people who like to clan), a new music riff (for lobbies and the like), certain nerfs and buffs, and more Mickey Cantor lines. I'm pretty sure there are more protags, too.
The Blog has all the details of what is exactly in the Upcoming FREE DLC. "Halloween Unmasking" are the names of the blog entries with the info.