We've made some changes to collections as well: you can now add and manage the foil cards, merge multiple open decks for the purpose of checking against your card collection, and an add/set mode for updating card quantities.
The interface has also been modernized and includes a number of additional enhancements to improve your deck building experience:
- Search cards by power, toughness, and color of mana produced
- Sort cards by color
- View card rarity through expansion icon color (for most sets)
- Import decks from Magic Workstation
- Save decks to iCloud (OS X 10.8)
- Share your cards, decks, and entire collections (OS X 10.8)
We hope you enjoy these changes, happy brewing!