Sanderson's Progress on next book

[Lateralus4418]

If memory serves the next book is due out this coming fall, however I've been watching his progress bar and it has not been moving much.  I can't remember for certain but i'm sure by this time last year the bar for "the Gathering Storm" had hit 100% and he was working on editing.  Yet this year we don't seem anywhere near that mark.  Does anyone know if the next installment is still expected this fall?  or are we looking at christmas or later? 

[Luckers]

August 17 deadline for submission, hoped for November release. This is in no way certain.

 

There are about 4 threads on this already.