I hope they don’t wait till 2020 to even comment about it.
I doubt they will comment on it then either
IMO there are way too many signs pointing to the next major home video release being in 2020 for it not to happen then (Disney getting the rights to ESB and RotJ, 4k UHD players in enough people’s homes, Episode IX having already been released on video the year before).
But even if they continue to hold off so as not to distract from the standalone movie planned for 2020, they’ve already said they’re planning to go on hiatus from new movies before long. Part of me wouldn’t be surprised if 2020 ends up being the hiatus. It would be a natural enough time to do it, after Episode IX and all. But whenever it happens, I think chances are good the relevant people at Lucasfilm will consider a fancy new home video release if only to justify their jobs.