A teaser trailer has stated that the next season of Game of Thrones will come out in April next year. Here is more of what viewers can expect: R + L = J : the evidenceIt has long been assumed that Ned Stark isn't Jon Snow's real father. The predominant theory is that Jon is the progeny of Rhaegar Targaryen and Lyanna Stark. In fact, it's so popular with fans that it has the nickname: R + L = J.Evidence cited also includes the nature of Rhaegar and Lyanna's relationship, with Sansa stating that her aunt was raped by the Targaryen prince. This would make Jon part Targaryen and nephew to Daenerys, as well as making him a potential heir to the iron throne.It's official: Jon Snow is definitely aliveActor Kit Harington has been spotted near the show's Belfast set. His character is said to be preparing to lead an army of Northerners against the Boltons.Will Sansa triumph over her enemies?Rumours suggests that Sansa will be reunited with her brother, Jon Snow, and will team up with him to take on her enemies. Last season, Sansa was raped by new husband Ramsay Bolton which may have brought out the more savage side of her character.New cast members joining season six?Essie Davis, star of the acclaimed Australian horror film The Babadook, is reportedly playing an actress within the world of Westeros, who stars as a Cersei-type character in a play called The Bloody Hand.Thespian Richard E Grant has joined season six, with some sources claiming that he'll be playing the leader of the theatre troupe performing The Bloody Hand.Former Deadwood actor Ian McShane joined the cast for series six in August and hinted that he'll be responsible for bringing a character back from the dead. ..