Whatever this is, it almost certainly isn't part of KK2. The design aesthetic of the two lines is completely different. This viking vessel has a more classic look to it, complete with traditional colouring.
KK2, was clearly aimed at a younger audience, with its bubble gum colours, and strong emphasis on geometric shapes. This line doesn't share these traits. What is for certain is that I don't see any wheeled horses, or orange sawblades here.
I'm not certain if I like this particular set, but I really like the idea of a Viking line. I really hope lego goes all out with this one. It could be a year to remember.