B&H has the new Nikon AF-S 80-400mm f/4.5-5.6G ED VR in stock and now shipping. Check it out here at B&H Photo.
And yes, if you want to save a few bucks, you can still order the old version for half the price.
Sigma’s new 30mm F1.4 DC HSM lens will be available later this month for $499. The new lens is designed for APS-C sensor DSLRs and will be offered in Canon, Nikon and Sigma mounts. Check it out at B&H Photo at the following links.
(Note that there’s still a backorder message on the page at them moment, but that should be removed as soon as the inventory in their system is updated.)