From Blood of Kittens:
Warhammer 40k: Inquisition
Inquisition is designed for 2-4 players and each side will use custom cards and dice. Army sizes consist of about 5-10 models per side. A whole new set of models drawn from Blanche artwork will accompany. The game should be flexible as you can make and design your own Inquisitorial retinue. As for rules complexity that is anyone's guess, but the general marketing goal for Inquisition is a gateway game into the greater Warhammer 40k universe.
Beyond that GW, seems to be taking cues from Kickstarter projects like Sedition Wars and home-brewed rules like Inq28 for Inquisitor. This also might not end up as a limited edition run, but that all depends on sales, and if any support is continued will be done through digital expansions and updates.
So keep your eyes out for more info.
Loken