First off, thanks Mike for the Cross-Post.
As far as how many sets they are bringing, that detail wasn't really brought up. When I go to WA tomorrow, I'll ask Jimmy for a contact more specific than just the homepage. Glad to see some interest in this, hope to see some people there next week.
*EDIT: I will actually NOT be there, due to me being a bad son and forgetting about my parent's birthday/anniversary party in St. Louis. Oops. Hopefully you'll be fine without me.*