Austrian website eLhabib.at have some Information about the new Warhawk Boosterpack.
The Keyfacts are:
The Name of the Boosterpack is: Warhawk: Operation Fallen Star.
It´s possible to use Jetpacks and you can also fire while you are in the air.
The name of the Jetpack is: Icarus Mk. I
The release for the new Boosterpack is expected in August.
More Information on the new Boosterpack should be available soon.