What SilverWook said.
Also, as I’ve pointed out, 2020 may very well end up being Lucasfilm’s hiatus year from new Star Wars movies. It would only make sense considering Episode IX hits theaters the very end of 2019, and they’ll be busy enough as it is with Indy 5 hitting theaters July of 2020.
They can’t release anything at the end of 2020 without bumping up against Avatar 2 box office-wise. The only time to release the Obi-Wan movie would be May, and that seems awkward to me when the saga will have just ended that December and they already have Guardians vol 3 scheduled for 2020, presumably for that first weekend in May.
Of course, I say that as the Han Solo movie is scheduled for just three weeks after an Avengers movie, but still.