Disney executives have repeatedly insisted that Star Wars Episode VII will be released in summer of 2015, but a new rumor suggests that the film may be pushed back to December 2015. The rumor seems to have started on Badass Digest, but a number of other sites are now supporting it with claims of having heard a similar rumor.
Disney has a number of high profile projects scheduled for the summer of 2015, including The Avengers sequel Avengers: Age Of Ultron. It would make sense that Disney might want to provide some separation between what are likely to be their two biggest movies of the year. We had actually speculated that Disney might give Star Wars Episode VII the release date being saved for Avengers: Age Of Ultron and push back The Avengers.
This would make sense from the perspective of that Lucasfilm recently announced the next Star Wars Celebration dates as April 16 to 19 to coordinate with the release of Star Wars Episode VII and new Star Wars movies have always traditionally been released in May.
However, it does appear that Joss Whedon is further along with Avengers: Age Of Ultron than J.J. Abrams is with Star Wars Episode VII. Maybe, Disney had been planning for a May 2015 release, but production realities are causing them to reassess. According to the rumors, December 15, 2015 would be the most likely release date, but the film could also be pushed back to Christmas day or out of 2015 entirely.