Even though Star Trek canon says that, after Nemesis, there was no more official Trek until Spock attempted to save Romulus, I think we all knew the intellectual property was too valuable to just be left lying there. The TNG novelists — old and new alike — were given free reign to do whatever was necessary to keep the story going, and they certainly did that.
The 25 Days of TNG continue on Escape Pod with Day 19: The Relaunch.