Earlier today, Twitter released an update to its iOS app (App Store link) that adds a number of new features and updates the app with the company’s new logo. Among the improvements include push notification support and “ambient notifications,” which appear in the status bar while using the app itself.

Full release notes:

Twitter for iPhone 4.3

• 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