Research In Motion's (RIM) new BlackBerry PlayBook OS 2.0 is available to download today, for free.

This latest OS has integrated e-mail client with a unified inbox, which gives the user the option to use a single inbox to consolidate all messages in one place. This can include messages from personal and office e-mail accounts, as well as Facebook, Twitter, and LinkedIn.

Meanwhile the BlackBerry Bridge now allows individuals to view and edit documents, e-mails, photos, and Web pages that appear on BlackBerry smartphones, on the tablet. Beyond that, the upgraded Bridge app also offers a new remote control feature that lets a BlackBerry smartphone be used as a wireless keyboard and mouse for the PlayBook.

There's also a new Contacts app that can be populated with updated information from Facebook, Twitter, and LinkedIn. The upgraded calendar app is able to integrate information from various social networking sites as well.

The company has also revealed that it is adding thousands of new apps to BlackBerry App World, including a range of Android ones that will be able to run on the PlayBook. A new BlackBerry Video store has been launched in the U.S., and will be available to other countries later this year.

Click here to read our Hands-on review of the BlackBerry PlayBook.

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