Update: They've confirmed on Twitter that the Digital Deluxe version also includes the card back!

Blizzard has teased the new exclusive card back that will be coming with the Warlords of Draenor Collector's Edition.

Image #5960

You can check out all the card backs in the game in our Card Backs area. View the tooltips or hit the Text tab to show all their sources!

Hearthstone on Android

Also Zeriyah has stated that the Android version of Hearthstone is still on track for later this year.
Originally posted by Blizzard (View Original)Collapse

We still have Hearthstone for iPhone and Android devices currently in development. We're still shooting for this year for an Android device release.