Earlier today, Twitter released an update to its iOS application (App Store link), bringing new features such as a refreshed user interface for direct messages on the iPad, improved sign ups, and support for Twitter's official photo uploading service, pic.twitter.com. The update, which brings the app's version number to 3.5.0, is available via the App Store on your iOS device 

  • Enhanced sign up experience
  • Upload photos to Twitter (pic.twitter.com)
  • Updated Direct Messages design on iPad
  • Tap a location on iPad to show Tweets nearby
  • Bug fixes and minor enhancements

Apple is scheduled to release iOS 5 tomorrow, October 12, 2011, which features system-level integration with Twitter's services.