This should be of no hoax and it should be no more a rumour, I think. The chance of making an error at this type of website is minimal. So, it should be true, which is almost certain! (I guess the item would be deleted very soon upon request, too! Let's see! ;-))
At a price of 400 Euros more, does it really worth it btw? Do note that it is considerably more expensive than the Canon EF-S 18-135, although now the Pentax version is Water Resisted.
Update (9-20): Here is a photo of it:-
