Not to my knowledge, Jeff. If you're familiar with Penny Arcade, or E3, then it's a lot more like those kind of conventions. Like E3, they're primarily about video games, but they do promote and advertise a lot of other forms of tabletop gaming (ie - Card Games, D&D).
The last time I went, I didn't see any GW tournaments, but I'm sure it'll be a lot of fun regardless.