This was released last week. Its very similar to Boom Beach, only not as good and not as stable. Still...it is a 40K game set on Istvaan IV during the Heresy so I thought it deserved a mention.
On Android
http://www.droidgamers.com/index.php/game-news/android-game-news/8513-horus-heresy-drop-assault-is-now-out-for-android