Robert Jordan had repeatedly said that the main sequence would
conclude with the twelfth book, with a working title of A Memory of
Light. Numerous times, including most recently on ComicCon 2006, he
said he would hold to this statement even if it has to be 1500
pages long. Before his death Jordan had planned to write two more
short prequel novels, an encyclopedia, and possibly two or three
other side-plot novels.
With Robert Jordan's death, on September 16, 2007 , the future of
the series is in question. His cousin Wilson stated in Robert
Jordan's blog that the story has gone into either word processor or
audio, and that Jordan's wife Harriet and Wilson have now heard the
entire story. They plan on publishing Memory of Light per Jordan's
wishes.