http://bloody-disgusting.com/news/3327448/purge-will-longer-annual-event/
While The Purge happens annual within the world of the franchise, Universal won’t be able to keep up.
Bloody Disgusting has learned that the third Purge will have to wait until 2016, opening on July 1, 2016, to be exact. Monday is the Fourth of July, which means the movie will have an extended weekend.
James DeMonaco, who wrote and directed the first two, will write the third with an eye to direct his storyline about a land where one night of the year, murder is legal and terrible things happen those unlucky enough to not be locked up tight in their homes.