Official Twitter client for Windows Phone got a minor update few weeks before which added only the new Twitter logo. Today it got updated to v1.5 with one welcome additional feature of Notifications Support. Yes, Notifications support was just added to the Official Twitter client. You can get notifications for Mentions, Favorited Tweet, Retweets, Direct messages andÂ New followers. If you are not using Rowi or Mehdoh, then you have to check this out.
Download the app here from the Marketplace.