Pointing out the facts is not a personal attack, just an attempt to clarify things.
There are ways and there are ways.
Pointing out that I am wrong in my speculations when the true answer remains unclear
If Pocket was asked to wait for the trilogy to be completed, or decided to wait of its own volition, the fact that the four novels were set aside four years ago means nothing; there's still at least one movie to go. I wouldn't expect to see movie-based sequel novels for several more years.