I have not started writing Alexandra Quick, Book Five yet. I'm not going to give you a schedule or an ETA, though I will tell you when I begin and keep you updated on its progress.
Don't even hope for it to be done before next year, though.
Right now, I have a general idea in my head of the major events that will happen, and a very, very rough outline which will probably bear no resemblance to the finished draft.
What will be in AQ5?
Crypt spiders and high-behinds
Students from other magical schools
Characters from previous books who didn't appear in AQATSA
More powerful magic
(....all subject to change....)
Anyway, feel free to use this thread for your speculations about AQATWA. :P )