Well this is rather shocking. Director Jon M. Chu‘s G.I. Joe: Retaliation was slated to open on June 29th, a little over a month away, but now Paramount has made a last-minute decision to push the film back all the way to March 29th of 2013. Deadline reports that the move was made in order to do a “conscientious 3D” post-conversion. This is a bit nuts, as we’ve already seen a ton of promotional material including trailers, TV spots, character posters, and even a fair share of interviews. Hit the jump for much more.