From the update:
The Stormtalon Gunship serves the armies of the Space Marines as both an interceptor and ground-attack craft. Fast enough to engage all but the swiftest of enemies, and sufficiently well-armed to reduce the chosen foe to a mangle of twisted wreckage and ruined flesh, it is a powerful addition for any Codex Chapter.
They'll need such power, too, as those crafty greenskins have managed to take to the skies in their own aircraft. The Ork Bommer can be used to make three kits: a Dakkajet, a Blitza-bommer or a Burna-bommer. Each one is capable of unleashing all manner of mayhem on their foes as they swoop across the battlefield making as many big flashy explosions as possible. There's more, because the crescent-shaped Necron Doom Scythes and Night Scythes are drifting across the battlefield as well, ready to tear apart enemy lines or deliver Necrons into battle...
All of these incredible kits are available to advance order now from games-workshop.com. Don't forget to add June's White Dwarf to your cart, as this must-read issue contains the official rules for the Stormtalon Gunship and Ork Bommer.