This was added to the A____ site on the Sony Nex 7 order page:
Shopping for a Compact System Camera?
Due to manufacturing concerns, availability of select Sony products are currently constrained. Some products may be temporarily unavailable from Amazon.com. We're working hard to offer our customers the product selection they expect, but in the event we donít have the camera youíre looking for in stock, feel free to check out products from Panasonic, Olympus and Nikon. These sleek new cameras with lens versatility are available today from Amazon.com. See all products