Board Thread:Lore Discussion/@comment-13417807-20130726023954/@comment-7953253-20130814134936

The High Elves will purge all Mundus to become gods again. The DB is just one of many that will fall before Elven hands. Then Alduin will return once again.

I don't think the Daedric Lords can enter Tamriel as of late since the shattering of the Amulet of Kings, during the end of the Oblivion Crisis.