From an early August preview at Marvel: http://www.marvel.com/news/comicstories.7865.The_New_Thor
The Mighty Hercules?!
Interesting, to say the least (assuming it's not one of those faked in covers like they did with BP). And heh, in the gear Herc looks more like the mythological Thor than Thor does.
I've been waiting for the arc guest-starring Thor since Pak first mentioned it right after Herc getting his own series was announced, back when it was supposed to be the third arc before the title got sidetracked by all the tie-ins.