This update from Apple will improve the functionality of this app. No new features are included.

1) If you play the game on more than one device then your hi-scores and game progress will now be synced between all your iPhones, iPads and Apple TV using iCloud.
2) You can use the left and right shoulder buttons on a third party MFI controller to shoot (optional). You'll still need to touch the screen to control the UI.
3) Replaced the Facebook Like button with a Link button that you can use to tell your friends about Silly Saucers via Facebook, text message or E-mail.