The developer of Polarbear has kindly sent the BlackBerryOS team a sneak peek at the upcoming Beta that is due to come out today.
So far, it's looking pretty good. Now that it completely authenticates with your favourite social networks it works pretty nicely, and you can also share text from other apps.
There are a few bugs (it's a beta after all), but it's shaping up to look like a nice app.
Check out the screenshots and don't forget to visit the Polarbear Beta site if you want a chance to check it out yourself.