User blog comment:Jimeee/Skryim DLC Details Leaked in 1.5.26 Update Files - The Snow Prince!?/@comment-4947435-20120428024531/@comment-5060344-20120428174356

Given the use of the Elder Scroll to learn Dragonrend and the whole Warp in the West business, I would not be surprised to see some element of time travel included, but that is just conjecture.