A friend and I were able to get tickets directly through the DT site (dreamtheater.net/tour, which goes through CrowdSurge) on Thursday during the pre-sale, around 10am CST. My best guess is since the site no longer links to a place to purchase tickets, maybe the "official" (non-presale) tickets aren't on sale yet. I was trying to find info on the venue site last week too before the presale, but no info posted yet.
It also wouldn't hurt to try giving their box office a call, to see if anyone there knows anything about it. If I happen across any other info, I'll be sure to post back here. Good luck, and see you there!