As previously speculated, The Hunger Games: Catching Fire will begin principle photography on Tuesday, September 11, 2012. Jennifer Lawrence confirmed with ET Canada on the red carpet at TIFF for her new movie The Silver Linings Playbook, that she will begin filming this upcoming Tuesday. Woody Harrelson also mentioned that he would begin filming in roughly 9 days (September 17, 2012).
Source: Down With The Capitol