Warner Bros. has made some adjustments to the studio's 2013 calendar, moving the Guillermo del Toro creature feature Pacific Rim from May 10, 2013 to July 12, 2013. The studio also slated 300: Battle of Artemisia for an August 2, 2013 release.

Pacific Rim will go up against Grown Ups 2 on July 12, 2013. If it would have stayed in the May 10 release slot, it would have been sandwiched between two highly-anticipated sequels, Iron Man 3 on May 3 and Star Trek 2 on May 17.

300: Battle of Artemisia goes up against the sequels Red 2 and The Smurfs 2.