Some Apple Retail Stores received shipments already
I'm not sure how it is in the rest of the country/world, but in Chicago, there are at least two stores which have new MBPs in stock already. Those would be the Old Orchard and Schaumburg stores. Interestingly enough, the largest store in the state (Michigan Ave) doesn't have any stocks yet. Also, for s---s and giggles, I called the New York SoHo store, and they didn't have them this morning either.
In any case, I bought mine today at noon (2.5 GHz 15"), and am about to begin migrating everything over!
So, if there are some of you who have as little patience as me, and have Apple stores nearby, check to see if they have stocks yet!