Disney has posted details about an open casting call for two young characters (male and female) with vague background details, and will be holding auditions throughout the UK. The fact that J.J. Abrams is directing and the roles are vague is leading to speculation that this could be for Episode 7 (as the last time the director had a similar listing, he was secretly casting his film Super 8.) Studio has neither confirmed nor denied that these auditions are for Episode 7, and Star Wars has a history of casting relative unknowns for their movies, so the chances could be pretty good that this is indeed for the film.
The descriptions of the characters have people speculating how the film is going to involve the characters.
Theories have included a story that goes back and forth between the time after Return of the Jedi and the potential setting of Episode 7, or that these characters are going to be friends/supporting characters along with the children of previous characters, even calls for a possible "parental twist" have been tossed around as well.
If you're in the UK and interested in auditioning, sources have directed us here for more information.