After Nikon D7100 just announced yesterday, now you can pre-order Nikon D7100 at most US stores online.
Currently, Best Buy, Amazon.com, B&H Photo Video, Adorama.com have D7100 available for pre-orders. If you want D7100 shipped first, order ASAP.
Nikon D7100 is expect to be in stock on March 22, about one month after it announced.
So today, you can pre-order Nikon D7100 at Best Buy, Amazon, B&H, Adorama.