Yes... leaks are all over and, we'll have to see what the world is talking discussing about this movie... (WARNING: Spoilers ahead):
"Marvel’s “Thor: The Dark World” continues the big-screen adventures of Thor, the Mighty Avenger, as he battles to save Earth and all the Nine Realms from a shadowy enemy that predates the universe itself. In the aftermath of Marvel’s “Thor” and “Marvel’s The Avengers,” Thor fights to restore order across the cosmos…but an ancient race led by the vengeful Malekith returns to plunge the universe back into darkness. Faced with an enemy that even Odin and Asgard cannot withstand, Thor must embark on his most perilous and personal journey yet, one that will reunite him with Jane Foster and force him to sacrifice everything to save us all.
Starring Chris Hemsworth, Natalie Portman, Tom Hiddleston, Stellan
SkarsgÄrd, Idris Elba, Christopher Eccleston, Adewale Akinnuoye-Agbaje,
Kat Dennings, Ray Stevenson, Zachary Levi, Tadanobu Asano and Jaimie
Alexander with Rene Russo and Anthony Hopkins as Odin, “Thor: The Dark
World” is directed by Alan Taylor, produced by Kevin Feige, from a story
by Don Payne (credit not final) and screenplay by Christopher Yost and
Christopher Markus & Stephen McFeely (credit not final) and is based
on Marvel’s classic Super Hero Thor, who first appeared in the comic
book “Journey into Mystery” #83 in August, 1962.
“Thor: The Dark World” is presented by Marvel Studios. The executive
producers are Louis D’Esposito, Alan Fine, Stan Lee, Victoria Alonso,
Craig Kyle and Nigel Gostelow. The film releases November 8, 2013,
and is distributed by Walt Disney Studios Motion Pictures"
(Source: http://screenrant.com/thor-2-synopsis/all/1/)