There's support so far for 640, 800 and 1024. As far as I understand there should be no art work download as the cockpits will be polygons, you can render them in any resolution from the same set of vertices. If they use 2D art masks somewhere else in the game I guess you might have to get them. I guess they'll have things like menu buttons and such with the base download for different resolutions or big enough to begin with that they don't become microscopic at 1024.
//fats