User blog comment:Jimeee/Skryim DLC Details Leaked in 1.5.26 Update Files - The Snow Prince!?/@comment-1786741-20120429181019/@comment-1726879-20120430092045

It could be possible for some of the Snow Elves to have escaped the battles during the second era, and managed to find refuge somewhere other than with the dwemer. It's possible that they simply fled and started anew, with a new Snow Prince and all that. It could also be possible that some of the Snow Elves were not turned into the Falmer by the dwemer, that they left some as they were, and once the dwemer disappeared, these restarted their civilization...

...Or it could be that we're going to be walking through dwemer ruins, killing even more falmer, again. Only time and information will tell.