Just called, they said 14 days from receipt and that you CAN take it into the store for a return.
Wait, really? If you ordered from Apple.com you can return it to any Apple retail store?
It better be when it is delivered because i'm looking to trade my 16gig for a 64gig but no one has it in stock. Regardless, that only gives me a little over 1 week to do the exchange. Hopefully some stores around me have it in stock soon.