It appears the posting of Apple laptops at BestBuy's online store may have been premature.
BestBuy.com has removed those items from their online store. The store listed PowerBooks and iBooks for one day (yesterday), and also offered a store-wide $150 rebate (until August 9th) on Laptops.
The official launch is expected to be August 10th, 2003, but many BestBuy store locations are already carrying the Apple products. (The Apple items at BestBuy's physical locations have not been pulled.)