Filming for the season will commence April 3, 2016.Wednesday March 30th, 2016 was the official first day of pre-production for Season 7.The Season 7 premiere title was revealed by Marlene King to be " Tick-Tock, Bitches" and she will be writing the episode as well.Tammin Sursok, who has portrayed Jenna Marshall since Season 1, will be back at some point in Season 7.Joseph Dougherty announced via Twitter that he is writing episode 7x02.Bryan Holdman announced via Twitter that he is writing episode 7x05.On March 16th, 2016, it was announced that Andrea Parker was promoted to Main Cast for Season 7 in the dual roles of Jessica DiLaurentis and her twin, Mary Drake.On March 14th, 2016, Jonell Lennon announced via Twitter she is writing the outline for 7x03.Writing and brainstorming started as of Monday, February 1st, 2016.Joseph Dougherty will also continue to executive produce. On January 8th, 2016, it was reported by Deadline that Charlie Craig, who served as a writer/consulting producer in Season 2 of Pretty Little Liars, would return to serve as executive producer/co-showrunner on Season 7 of PLL, alongside fellow executive producers/co-showrunners Marlene King and Oliver Goldstick.Later, Marlene confirmed that he will first appear on the 15th episode of the season, which is ironically directed by Bellisario. On August 22nd, 2016, Morris confirmed he would be in 7B. On August 11th, 2015, Julian Morris promised PLL fans that Wren Kingston will be back before the seventh season's finale.Season 7 will be the final season of the series.