To be honest, I found the Thrawn trilogy to be very overrated. Nearly swore me off Star Wars novels completely. As it is, I think I've read ten, that's counting each Thrawn book seperately.
Maybe Cumberbatch is really playing Thrawn in this movie, and the new Star Wars movie will be a crossover?
Actually, the idea of Cumberbatch playing Thrawn is kind of cool sounding.