According to an announcement on the official website, Star Wars: Episode VII will officially open in theaters on December 18, 2015:

“We’re very excited to share the official 2015 release date for Star Wars: Episode VII, where it will not only anchor the popular holiday filmgoing season but also ensure our extraordinary filmmaking team has the time needed to deliver a sensational picture,” said Alan Horn, chairman of Walt Disney Studios.

The film is currently still in pre-production, with director JJ Abrams and Lucasfilm vet Lawrence Kasdan taking over writing duties from Oscar-winning original writer Michael Arndt. Reasons are still unclear why Arndt (Toy Story 3) was taken of the project. (via RS)