Apparently it's finished. It will require numerous rewrites and edits, but the book is essentially finished. Sanderson said to look for the final book in the fall.
Oh, when ever I get the longing for the last one, I go on a revision of my favorite parts in previous books.. Thank fully I started this in August and haven't heard of it before.. Now just one more year to go till the last book.. :)
I still wonder how BS is going to cover all loose ends in one book!
I'm fairly sure it was well mapped out for him. I'll go and re-read the lot a couple of months before I do.
TIL today, there is a comic book for The Eye of the World.