We've been aware of retailers making speculative Wii U listings, and the latest appears to be from amazon.co.uk. Amazingly, the listing gives a price of £199.99 ($310 USD), is specifically for the black model, and says that it'll be available on 14th July.
Elsewhere on the site Amazon lists the white console with no price or launch date, so everything suggests that this is some kind of fake or error on Amazon's part. Although it's called Wii U console, the platform is listed as Nintendo Wii.
Is this genuine, an elaborate fake or a mistake by Amazon? We'd suggest the latter, but check out the link below if you want to see for yourself. We do advise caution, however, and suggest that it looks too good to be true.