I must admit, I am slightly worried that they're just meshing together a heap of stuff associated with cold weather. Vikings... mammoths... etc. Throw in the cliché fantasy stuff like dragons, and it's starting to look even further away from Morrowind's unique style than Oblivion was.
I still have faith though. Bethesda have said that they're aiming for some middle-ground between Oblivion's traditional fantasy and Morrowind's strange world. Hopefully they're keeping a lot of the best stuff a secret, and under all the clichés there's a lot of unique culture.