If they are not doing anything right now, I don’t see how 2020 is a realistic date.
It’s simple, they don’t want to do anything other than reissuing the 2011 discs until the rights are back in their hands (with the previously noted exception of ANH, which will never be back in their hands anyway).
Yes, it’s reckless of them to wait so long and risk further deterioration of the source elements, and Poita’s efforts are commendable, but I don’t see what’s so hard to understand about the 2020 thing.