The full version of this Star Wars: Battlefront video will be shown on 5 August during Gamescom, so you can wait until then if you don’t want to bother with 12 second ‘teasers’. If you DO want to bother with that, a tiny amount of Fighter Squadron mode can be seen in the twitter post below.
We've got fighters incoming!
— EA Star Wars (@EAStarWars) August 3, 2015
Not a huge amount to be gleaned from that, obviously. A-Wings and X-Wings are in (as you’d expect), and it looked like they were blowing up TIE Fighters (again, not too surprising.)
By the looks of things, then, EA are preparing for a more detailed run-down of Star Wars: Battlefront’s Fighter Squadron mode at Gamescom.