The new Nikon 800mm f/5.6 lens is listed on a Swiss online store with a price of CHF 9937 (around USD 10,200). The site has also some additional specs that were not made official yet:
|Lens design||15 elements in 12 groups (including three ED glass lenses, one Nano Crystal Coat element and one meniscus protective glass)|
|Minimum focusing distance:||600cm|
|Dimensions:||166 x 455mm|
|Weight:||5060g (178 oz)|
|Delivery:||Lens Hood HK-29, wide belts lens, lens cap, rear lens cap, lens case metal-CF-606, 52 mm filter holder, gelatin filter holder|
If those specs are are correct, the new 800mm lens will have a size, weight and price similar the current 600mm f/4G ED VR.
Update: the store contacted and confirmed that they just "guessed" the price and specs of the lens - this rumor is busted.