This is a list of updates that happened in 2013.
After the closed beta ends every account will be resetted, you will lose everything credits and cards. You will gain a special title for participating in closed beta and you will gain 100 Credits and 2000 Gems if you played at least 100 games before the end. The point to play in a closed beta is to tune the game and find bugs not to gain edge over other players that cannot join. They give us credits to test the shop and to gain cards so we can test them.