Grand Admiral Thrawn and Darth Vader ally against a threat to the Empire in this new novel from bestselling author Timothy Zahn.
The sequel to New York Times bestseller Thrawn, Thrawn: Alliances will continue to follow the rise of Grand Admiral Thrawn to the heights of Imperial power—and accompany him into the past, witnessing his first encounter with the man who will one day become Darth Vader.
So the book will cover two time periods – prequel-era and (presumably) Rebels/original trilogy. It’s currently scheduled for a June 26, 2018 release in hardcover and eBook.
The book is in the final stages of being written if not done already… that’s my speculation.