I can pretty much guarantee you that they won't release it early. a) They have to have made 1 delivery attempt and failed (if you weren't home to sign for it, for example), and b) Apple dictates that they're not delivered prior to the 24th. The same thing happened last summer when people's statuses changed--everyone got all psyched for early delivery and it just didn't happen. Sorry.
Damn, I wish I'd been able to actually preorder and not just reserve. I miss the excitement of repeatedly hitting F5 on my order status page.