They haven’t said who they are approaching to direct these even if they get made.
There already have been cancelled trilogies like Obi-Wan and The Old Republic.
They said they were done with Saga films and numbered episodes. Whether we actually get episodes 10, 11 and 12 remains to be seen.
Honestly, I wish they wouldn’t announce until they had a director, a locked shooting date and a script. and a release date booked for theaters.