The Icon Factory has released a major update to its popular Twitter client. Twitterrific 3.0 merges the previous separate iPhone and iPad versions into a single universal app for both platforms and adds support for iOS 4 fast app switching and interface optimizations for the iPhone 4 Retina display. Other new features and improvements include VoiceOver accessibility for the visually impaired, a light appearance theme, OAuth authentication and tweet integration for media upload services, new “Relationship” information on the user profile screen and a simplified and friendlier user interface for iPhone users. The update also fixes problems with shortening very long URLs and preserving draft tweets when network problems occur. Twitterrific 3.0 is available from the App Store as a free ad-supported version—a Premium upgrade is available within the app for $5 to remove the advertising and add support for multiple Twitter accounts. Twitterrific 3.0 Premium is a free upgrade for Premium users of the iPad version; users of Twitterrific 2.0 for the iPhone will need to purchase the Premium upgrade separately or use the free, ad-supported version with single account support.