It’s here! And you’ll see a few familiar things…
Entertainment Weekly has a gallery with a closer look at the trailer imagery, including that ‘Jyn Erso’ is the proper spelling of Felicity Jones’ character’s name, and that is indeed Genevieve O’Reilly (from the Revenge of the Sith cut scenes) reprising Mon Mothma. io9 has a good breakdown, too.
Finally somebody remembers that the Rebels have troopers, too.
OMG OMG OMG