Some more screens for Ace Combat 3D Cross Rumble have come out of the Nintendo 3DS Conference 2011. They involve planes, a radar, a weapon loadout, some Japanese text here and there, and yep, that looks like an Ace Combat game for the 3DS.
Nintendo has also released some video footage of the game on their website, which shows the game to be some kind of hybrid between the old style of the franchise and the new cinematic action style created for Ace Combat: Assault Horizon. It doesn’t look too bad, and Ace Combat 3D will probably be a good test to try out on someone on a ship in stormy waters if you want to know if he or she suffers from motion sickness.