Star Wars Celebration: Anaheim
It was just announced a few minutes ago, during the closing ceremonies at Celebration Europe, that the next Celebration will be in Anaheim, California from April 16 – 19, 2015.
This would seem to line up with the release of Star Wars: Episode VII which is still on track to open in 2015.
There is an update to this article; tickets for Celebration Anaheim will go on sale August 7, 2013 at 10:00 AM.