Holy crap. Thrawn is officially part of the new Star Wars canon. And there will be a new Thrawn novel. I'm so happy. This obviously means the Chiss are canon now as well. I need this book. Hell, I might even have to watch Star Wars Rebels now.
http://io9.gizmodo.com/grand-admiral-thrawn-joins-rebels-and-the-new-star-wars-1783779089