The latest issue of Thor by Jason Aaron and Mike Del Mundo saw Thor, Wolverine and Dr. Doom battle it out in the far future while utilizing immense power obtained from other Marvel heroes. Loki gets a major upgrade, too.
Warning: full spoilers for Thor #6!
Eons in the future, King Thor brings new life to the long dead planet Earth. This spark of life in a dying universe draws the attention of both Wolverine and Doctor Doom.