Superman demo tomorrow?

We revealed two weeks ago that a Superman Returnsdemo was on the way, and now Xbox Solution reports that it should show up tomorrow. We haven't seen anything official regarding the demo (and Xbox Solution curiously neglects to cite the source of their info), so chalk this one up to a rumor for now. If any of you have seen this info reported elsewhere, let us know. Frankly, we hope it does come out tomorrow, because we're actually pretty anxious to give Supes a try. Anyone else out there (cautiously) optimistic about this title?