Posted By Nagash at 02:06 AM - Fri Apr 28 2017
They also mentioned on the Q&A that packages for titles etc wouldn't be available at launch, which hints at them still being available to buy for a long time yet.
I think that the "finishing your layaway" warning was mainly to the people who have been asking how long they have to finish their layaway, because they want to pick land and/or server at the same time as everyone else.... if you don't have your layaway finished, then your not going to be able to pick anything until you finish it, as your pledge doesn't count.
The dev Journal Merriment-in-Increments gave the original layaway deadline as being Exposition. They also mentioned in DJ-19-PreAlpha-Experiences that "it is possible for new Mayors / Barons [and less likely new counts] to emerge from KoE" by purchasing them. Suggesting that those packages will at the least be available until Exposition.
However, those counts and mayors who care about where their domain/settlement is located should be fully paid off as soon as possible.