Herocraft has announced that they will be publishing a new TCG soon that will be based off of the Warhammer 40K franchise. This new TCG will be arriving for both iOS and Android gamers who are fans of the Warhammer 40K franchise although the title's release isn't for a bit.
Officially called Warhammer 40,000: Space Wolf and will be a turn-based tactical type of game which is pretty much what every TCG ends up being anyways. However, since this is themed around Warhammer 40K, it will probably end up being much more interesting than the majority of TCGs out there.
The single player campaign has four different story branches you can go down (Grey Hunter, Wolf Scout, Blood Claw, or Wolf Guard), letting you experience different stories as you play through the game. The game will also feature a lot of the standard TCG features including the ability to build your own decks, evolve your cards and unlocking new ones through victories.
As for when you will be able to get your hands on this game, unfortunately you'll have to wait for a bit as Warhammer 40K: Space Wolf won't be released until sometime in 2014.