BestBuy has listed the Nikon D800E on their website and you can now order it. I checked several different zip codes and the availability was 5-7 days (shipped to your local Best Buy store). The D800E was previously not listed on BestBuy.com. The D800 and D4 are still listed as "sold out online".
Here for example are the store pickup results for Best Buy locations near New York City:
Currently in the US, there is a third large shipment of Nikon D800 being shipped to existing pre-orders.