That's really all you need to know, but I'm sure you want to know more. *urge to know more intensifies*
Fantasy Flight Games has announced the next wave of Star Wars: Armada releases and one of the upgrade cards you'll be getting is Grand Admiral Thrawn. The Rebels get some stuff, too, but it's not nearly as cool. :P
From the preview:
In Armada, you assume the role of fleet admiral, serving with either the Imperial Navy or the fledgling Rebellion. As your fleet engages your opponent's, it's your job to ensure your ships and squadrons are all provided the right commands. You direct their movement. You balance your defensive and offensive tactics against your need to complete objectives. And all of this means planning multiple steps in advance.
The Star Destroyers, Mon Calamari star cruisers, and other capital ships at the heart of Armada aren't quick and nimble like the starfighter squadrons that buzz all about them. They're massive, lumbering vessels that need time to adjust. Getting them into the right position at the right time requires anticipating your opponent's moves, as does making sure your crews are ready to take the right actions.
This is where Thrawn comes in. The striking, blue-skinned Chiss is almost unparalleled as a tactician. Even without the powers of the Force, he's able to anticipate his opponents' moves, using his studies of their history, philosophy, and art. He aims for an understanding of his opponents' deepest desires, using it to play upon their weaknesses, and he's patient enough to allow his foes some smaller victories in order to win the larger war.
In short, Thrawn is, in many ways, the epitome of what every Armada admiral aspires to be, and his inclusion in your Imperial fleet ensures that you'll immediately reap the rewards of his foresight.
And Thrawn's foresight is just the beginning of all that Wave VII has to offer!