Still nothing unlocked on the Dragon Age 2 demo page, but the demo is apparently out later today. We'll keep this post updated, so please put links in comments once it's live so we can get some mirrors and stuff. That said, I don't know whether the mirrors will count towards Bioware's one million downloads challenge, in which they've offered to unlock some in-game items if that figure is reached. Perhaps that's just downloads from the official page? Hmm.
Anyway, keep eyes peeled for incoming, people!