We were expecting this to hit since the icon was showing in iTunes yesterday, and now the official Twitter for iPhone app has finally landed.  The app is an update to Tweetie 2, so users who already owned Tweetie can find the Twitter for iPhone app in the updates section of their device or in iTunes.  The icon has changed to display the Twitter bird but the interface of the application looks to be largely unchanged from Tweetie 2.  Some new features of Twitter for iPhone include the ability to view top tweets and suggested users, search and view both trends and top tweets without a Twitter account, the ability to retweet from the main action bar, and some other minor tweaks. 

Overall, Twitter for iPhone seems like a worthwhile free download for existing Tweetie users as well as other iPhone and iPod Touch owners who have yet to experience Tweetie/Twitter for iPhone.  What do you think of Twitter for iPhone? Tell us your thoughts!