Here are the details on 1.3:
--new card decks! There are now 3 card decks to choose from, including my favorite, the "Action" deck.
--all new background screens. The game has received a major graphical update. You can see all the new screens on the Steam Store page for the game.
--new defensive gameplay that makes playing defense more fun!
The reaction of the beta testers to the new defensive gameplay was unanimously positive, so I hope everyone enjoys it!