As I was saying in the Wonder Woman thread, I’ll be very surprised if Episode 9 makes its May 2019 release date. Even assuming the best about Colin Trevorrow, Episode 8 was originally scheduled for May of this year and was pushed back to this December. If they needed a full two years for Episode 8, seems pretty reasonable they’d need just as long for Episode 9, and that’s before you factor in the necessary rewrites after Cary Fisher passed away.
And if any of these rewrites are also due to any concerns with Trevorrow, obviously that just makes a May 2019 release even less likely.
Oh, and this was brought up in the Wonder Woman thread because the WW sequel is going to hit in December of 2019, so if Star Wars was going to push back Episode 9 to December, they’ve got some serious competition in that window now.