Twitter, the popular social networking service, has just released a major update for its official iPhone app. Version 4.0 echoes the changes that the company has been rolling out to its web app, with a new look and new features.
The app has been noticeably revamped with an all-new user interface. Most notably, the four tabs across the bottom of the app have been replaced with "Home," "Connect," "Discover" and "Me" buttons that aim to enhance your Twitter experience...