Since I ordered, it said "on or before the 28th." It has finally shipped , and it got rid of any statement about when it would arrive. The FedEx tracking (most reliable thing to go on right now, they have been right almost every time I have gotten something delivered through them), says it will be at my place "April 29th, by 4:30 pm."
Guess Apple wasn't right about when I was getting it, I was looking forward to taking an exam tomorrow (Brains, Behavior, and Information Processing, its going to be fun), and coming home to Tiger. Oh well. Back to studying, I guess.