The Bethesda Blog has details and links to get you registered for the August event in Dallas.That is once the doors open on the pre-reg page. It'll be online in a little over 8 hours as of this post. [8 PM Eastern US].
Why would I announce this non-art event? Well outside of the profession expos, this event has historically been a popular one for Polycounter meet-ups. I can't even remember how many of them I've been too. I don't always go out to LAN parties, but when I do, it's QuakeCon.