Here's some interesting speculation on this, which is probably correct.
The current rumor is that Rian Johnson's trilogy is canceled. Back in February, a rumor came out saying it was canceled and he responded by saying it was BS.
This time when the new trilogy dates were revealed, a bunch of rumors came, with one of them saying that D&D's trilogy is what was announced. Not a week later, Disney confirmed it was their movies.
Where am I going with this? Another rumor that came from the same place was that this trilogy is what Rian Johnson was always talking about and that now he might just serve as a consultant for D&D. Same person also confirmed the original rumors from February were indeed BS.
Guess Disney wasn't happy with TLJ either lol.
Which is funny because D&D are getting just as bad if not worse backlash lol. Disney is behind the times. ---
"It's basically just a stuffed animal at that point." -Tyranthraxus