Indeed he is! Why, he's even brought Jane Foster (Natalie Portman) to meet his family on his home world of Asgard. The trailer covers the bases, reprising previously-seen destruction and including snippets of new destruction, and even gives Heimdall (Idris Elba) a line of dialogue. Mostly, it focuses on the antagonistic relationship between Loki and Thor, which also allows room for a bit of levity under the direction of Alan Taylor, whose experience with Game of Thrones, among many others, seems to make him a good fit for the material.
Anthony Hopkins, Jamie Alexander, and Kat Dennings also pop up in the trailer. The film opens in the U.S. on November 8, and throughout the known universe either shortly before or shortly after that date.