She’s tweeted it will be finished this year. I’m sure there’s editing too. Funny story, Diana has said she celebrates finishing a book by buying all new house linens.
George RR Martin’s books are edited while they are written in order to put them out as soon as he (eventually) finishes them. Does she use an editor who is checking, revising, and editing them while she goes?
I’m not sure of her editing process. I do think book eight was delayed because her editor caught a big plot hole or something and she had to go back and fix it.
Here’s the link about book 9 coming out this year. Now, it could be Dec 31 (or whatever the last Tue of the month is, I’ve noticed books tend to be released on Tuesdays.