Lucasfilm and Disney have so far not confirmed a release date for Episode IX, but either May 2019 or December 2019 seems likely. May used to be Star Wars‘ month to release movies but as Disney has seemingly given the first week of the month to Marvel Studios’ properties, putting two major releases three weeks apart crowds the summer season and cannibalizes the long running success of each. For 2019, Marvel Studios has the fourth and Untitled Avengers movie hitting the first week of May, so it would be a surprising move for Lucasfilm to date the conclusion to this trilogy (and potentially saga films as a whole) so close to another one of Disney’s biggest tentpoles.
Instead, an April start date could mean the beginning of pre-production as well, or director Colin Trevorrow is being given a massive head start to meet a December 2019 date. December is where The Force Awakens made its mark on the history books and both Rogue One and Episode VIII look to do the same. The young Han Solo movie will arrive in May of 2018 instead, to avoid competing head-to-head with Avatar 2 in December. Episode IX seems most likely to take the December 2019 spot (what with Avatar 3 not arriving until 2020) – and if so, it should have more than enough time to become a satisfying conclusion to the trilogy, if the rumored filming start date is accurate.