AB2 2.2.1 is out
Some observations
1) New look for cards
2) You can see the cards status at main page instead of going to "gears" menu. It is next to the daily objectives
3) New levels.. Halloween theme related. Added in new challenges... SLIME!
Slime = it flows in 1 direction and carries debris, birds, and pigs (warning, pigs will not pop when they fall into it...)