Loraziel over at Dakka Dakka posted this shot of the rumored Death from the Skies flier compendium.
initial rumor was that there would be a number of new fliers including
A new Tau flier
A new Eldar flier
The Dark Eldar Voidraven Bomber
and a new Tyranid unit called the Harpy.
meanwhile there's another rumor saying that this is just an update that brings all the current fliers in line with 6th edition rules (plus adding the DE Bomber). I'd obviously see some new fliers, but only time will tell.