On the Galactic Starfighter front, BioWare is adding two new scout ships and two new strike fighters to the roster. There will also be an additional map, Denon Exosphere, to be that hotshot flyboy or flygirl you know you are in your heart. This map takes place in and around a wreckage field and a space station.
Patch 2.7 has plenty for the ground game as well. It will conclude the first season of ranked arena PvP, add a Quesh Huttball warzone, give the Dread Fortress a nightmare mode, and jumpstart the next portion of the story with two flashpoints: Korriban Incursion and Assault on Tython.