Twitter happy users out there that rely on a Blackberry handset may soon see something special to make the experience on their phones a bit easier. Although one can simply go on Twitter's web site on a BlackBerry, RIM has been quietly working on their own Twitter client for some time. BlackBerry trotting owners will soon get closer to the reality of a Twitter app as RIM announced that their client is in beta form and will be available for download via invite-only. You can simply sign up and receive updates from RIM when the full blown version is finally made available to everyone else. The invite-only beta is going to be offered for about a month and is available in six languages – English, French, German, Spanish, and Brazilian Portuguese. So even if you don't get that special invite to checking out the client ahead of everyone else, let's just hope it's not much longer before the actual full version of the client makes its presence on the QWERTY loving BlackBerry smartphones.