From UberTwitter to TwitterBerry to SocialScope and Tweetcaster , we’ve covered numerous Twitter apps on the Blackberry. But according to BlackBerry blog CrackBerry , there could soon be an official Twitter app released by RIM. The blog writes of the development: It’ll be a BIS-B Push based handheld client leveraging RIM’s past app experiences and making use of the new components being developed within MySpace projects. It...