Today a user is able to assign a custom ringtone to a list of various contacts found in their address book. In fact, custom ringtones can apply to SMS/MMS messages, email and calendar events to audibly inform the user of an underlying notification or alert. Today, a new patent application from Apple published by the US Patent Office reveals that Apple is working on advancing the notification system so that users will be able to assign custom vibration patterns to various notification events such as incoming calls, emails and so forth by using a new user interface associated with custom haptics. Uniquely, users will also be able to purchase custom vibration patterns from developers and/or web services at Apple's App Store. In the future, you're likely to see services like Twitter, Facebook and your favorite news sites delivering unique iDevice vibration patterns to alert you of new updates and/or breaking news reports. In-part, the new feature was made available with iOS 6.