Here is a list of some upcoming SFF books this month.
From the Publishing World:

The Best American Science Fiction and Fantasy 2016 edited by Karen Joy Fowler and John Joseph Adams
The anthology features author Salman Rushdie, as well as many established and rising authors.
Fowler, this year’s guest editor, is a Nebula and World Fantasy Award winner, as well as a Man Booker finalist.
Adams, the series editor, is a Hugo Award winning editor, as well as publisher of the digital magazines Lightspeed and Nightmare.
Release date: October 4th
The Wall of Storms by Ken Liu

The Wall of Storms is the sequel to last year’s Hugo, Nebula, and World Fantasy Award winning The Grace of Kings, which told the story of two men who rebelled against tyranny together, only to become bitter rivals.
Release date: October 4th
The Found and the Lost & The Unreal and the Real by Ursula K. Le Guin

The Found and the Lost is a collection of all the novellas published by National Book Award winner Ursula K. Le Guin.
The Unreal and the Real is a curated volume of the author’s short stories.
Release date: October 18th
A Game of Thrones: The Illustrated Edition by George R.R. Martin

In celebration of the 20th anniversary of the first novel in Martin’s A Song of Ice & Fire, this illustrated version is being released. All illustrations, unless specifically noted, are credited to Martin himself.
Release date: October 18th
A Taste of Honey by Kai Ashante Wilson

A novella set in the world of Wilson’s 2016 Crawford Award-winning The Sorcerer of Wildeeps. In this tale, a member of the royal family finds himself in love with a soldier to the disapproval of his father and brother.
Release date: October 25th
From the Indie World:
Light in the Darkness: A Noblebright Fantasy Boxed Set

Light in the Darkness is a boxed set of 12 novels about characters who fight for good against the darkness in the world around them.
Release date: October 18th




