The release notes for the next version of Twitter for the iPhone has been leaked. The new Twitter app will have several changes including the ability to preview content when viewing tweets containing links. Tweets will be surfaced around selected events. Autocomplete suggestions will pop up when searching for people in Connect. Push notifications can be customized around specific users that you follow. Notifications can be set to ambient so that they show up in the status bar while using the app. Trends can be personalized. And of course the new Twitter logo will be added in the update.