@OrigamiCar: There was an email sent out on 10/8/12 with the subject "Plan your Build 2012 experience". It had the following sigh up link..."There's limited space, so email buildhacker@microsoft.com to reserve your spot today!" You may be able to still use that email. I used it to signed up team members and myself but have not received a confirmation one way or the other. Not too worried, figure we'll find out what the deal is on Monday.