Doug Stanton and I went to the park today, and heard from a couple people that it had tested earlier that morning. So, after the park closed, we stuck around for another hour or so to see if they'd test it again. Sure enough, they did.
All I can say is wow. The train goes through it's course at least twice as fast as in the animation (no exaggeration). It was absolutely amazing.
I've ridden over 170 different coasters, and I can safely say that if it continues to operate like it did today, it will easily rank as one of the greatest, if not THE greatest, coasters ever built.