As leaked earlier this week, Twitter has released a major update to its iPhone application with improved notifications, interactive tweets and more. Here are all of the new features:

– Expanded Tweets: when you view Tweet details containing links to partner websites, you can now see content previews, view images, play videos and more [please note: this feature is rolling out gradually] – Enhanced experience around selected events with the best Tweets and photos from those involved – Push notifications for Tweets: choose to receive notifications from people you follow anytime they tweet or retweet – Ambient notifications: enables you to see brief non-interruptive notifications in the status bar while you are using the app – Improvements to search autocomplete for users – Discover: now indicates when new stories are available for you to view – Tappable avatars that take you directly to user profiles – Performance improvements – Support for password entry in app when experiencing authentication issues – Hungarian language support – Updated with new Twitter bird – Many other tweaks, polish, and bug and crasher fixes

You can grab the free update from the App Store here.