RIM have released an update to their Facebook client for BlackBerry Smartphones as well as the BlackBerry PlayBook.
New features for Smartphones include:

• Brand New User Interface
• Facebook Chat
• Improved News Feed
• Enhanced Profiles
• Core integration including information sharing with BlackBerry Messenger

New features for the PlayBook include:

• Facebook Places
• Facebook Event viewing
• Ability to view ‘Likes’
• Privacy control on status updates

The software is available to download from the AppWorld here for Smartphones and here for the PlayBook.

Facebook 2.0 for the PlayBook

Facebook Places

Facebook Places allows you to share where you are, what you’re doing, and who you’re with. With your permission, Facebook Places uses location-based technology on your BlackBerry PlayBook tablet to tell you about Places nearby. When you check in to a Place, you can tag a friend and include a comment. If your friends have activated this feature, you can also see where they’re are checking into. Additionally, you can learn about Places nearby by checking out a Place’s page to see who has been there that you know and any comments they’ve left.

You can also view the location of a Facebook Place on a map to see exactly where it is and check out the surrounding area, and even get directions by clicking on the map image, which will seamlessly launch Bing Maps.

Facebook event viewing

Facebook Events allows you to stay up on all of your social plans. With this feature, you can view upcoming events and birthdays, and receive notifications of new invitations that have been generated through the Facebook platform. Facebook for BlackBerry PlayBook tablet v2.0 also allows you to view event details like time, place, guest list and RSVP or write on the event Wall, if those features have been enabled by the event organizer.

View "Likes"

With Facebook for BlackBerry PlayBook tablet v2.0, you can now see the names of friends that liked your post and tap those names to launch their profiles.

Privacy control on status updates

Facebook for BlackBerry PlayBook tablet v2.0 allows you to control who can see each update you share on the fly. Simply click the lock icon in the lower-right corner of the status publisher to select who you want to make the status update visible to before posting it.

You can read more on the Official BlackBerry Blog - http://blogs.blackberry.com/2011/07/facebook-places-events-on-playbook

Facebook 2.0 for Smartphones

Facebook 2.0 for BlackBerry Smartphones requires device software 5.0 or later.

New User Interface

The new interface puts all of your messages, friend requests and chats all in one handy location and features a new navigation grid and notification bar.

Facebook chat

Facebook chat is now fully integrated into the BlackBerry Smartphone, with the ability to start new chats either from within the Facebook application, or from within Messages. New chats will be alerted in the notification area even if the Facebook application is not running.

Improved news feed

Now you can scroll effortlessly through your Facebook News Feed without accidentally clicking ‘Like’, and you can interact with your friend’s posts in just two clicks. Simply click the ‘More’ button (+) to ‘Like’ or add a comment to a post. The enhanced publisher functionality allows you to post photos to your Wall, add an update, or check in to a Facebook Place right from the News Feed. Likes and Event Wall posts will also appear in the notification area.

Enhanced Profiles

The new Profile interface now provides Wall, Info, and Photos tabs for an even better browsing experience. New to v2.0 is the ability to view key information on Profiles and Pages, such as contact info, basic info like birthdays, hometown and relationship status, and likes and interests. Plus, you can discover which friends you have in common with another user with the Mutual Friends feature. You can also now view a user’s Friends List from their Profile if their privacy settings permit this.

Core Integration

The Facebook for BlackBerry smartphone v2.0 app is integrated everywhere you expect it to be, like your BlackBerry Message list, BlackBerry Contacts, BlackBerry Calendar, BlackBerry Browser…and now it’s even integrated with BlackBerry® Messenger (BBM™). You can share Facebook posts with BBM contacts and invite friends to BBM when you come across a PIN posted on Facebook.

You can read more on the Inside BlackBerry blog - http://blogs.blackberry.com/2011/07/facebook-for-blackberry-bbm