According to Jedi News, Disney may actually move the release date of Episode 7 away from the summer to capitalize on both it and the fall season (The Avengers 2 is their summer blockbuster already).
"A non live-action teaser trailer will be aired on 4th April 2014, the release date of Marvel Studios Captain America: The Winter Soldier. The teaser will be similar to the recent Star Wars Rebels trailer in style and will be the first official reveal of Episode VII’s release date of 11th November 2015 (11/11/15)."
That post was taken down for a day or so but was recovered. The rumored release date is 9 days before the final installment in The Hunger Games series, a film that would split audiences, which again puts its validity in question.
Another rumor from Ali Arikan, chief film critic, who put his credibility on the line by tweeting about an imminent Star Wars announcement.