Check the release notes on serenescreen.com. Release history:
3.0 (1735) 2009-3-2
RELEASE: User Interface: Improved user interface for crystal selection
RELEASE: User Interface: Improved user interface for music player selection
FIXED: User Interface: Fixed Crash Bug on settings page
3.0 (1727) 2009-2-17
FIXED: Upgrade: Fixed upgrade path logic
FIXED: Registration: Fixed Keycode registration
RELEASE: General: Added Crystal and Calendar to tank
FIXED: General: Fixed Multiple monitor bug
FIXED: Sound: Fixed sound initialization bug
3.0 (1605) 2009-2-4
RELEASE: General: Early BETA Release of Marine Aquarium 3