Having unveiled Battlefield 3 with a cinematic trailer and few other details, developer DICE have issued the first in-game trailer.
DICE also announced that pre-ordering BF3 will net you the 'Back to Karkand' "digital expansion pack" for free, which will contain re-imaginings of four classic Battlefield 2 maps plus BF2 weapons and vehicles, and more. One presumes it'll be sold separately after launch. While word of this bonus had leaked out, it was never confirmed.
Battlefield 3 is due out later this year for PC, Xbox 360 and PlayStation 3.