RIM has made its Twitter App, Twitter for BlackBerry, available in the BlackBerry App World store from Friday for those intent on twittering by official means.

The new app will let you get direct messages as soon as they arrive, reply to tweets, re-tweet to your hearts content and post a link from the BlackBerry browser.

One built-in feature that might make you want it over anything else out there is the ability to have messages go straight into your inbox rather than only accessible via the app interface.

BlackBerry who've offered the app in Beta since February have said that following user feedback, the app now offers List support, personalisation settings and the ability to Show/Hide Nav.Bar and Tweetbox. Oh, and it will cache a bit more than it did before as well.

Available for free you can get it now.