Apple today released OS X Mountain Lion 10.8.2 which is recommended for all OS X Mountain Lion users and includes new features and fixes.

Facebook
• Single sign on for Facebook
• Adds Facebook as an option when sharing links and photos
• See Facebook friends’ contact information and profile pictures in Contacts
• Facebook notifications now appear in Notification Center

Game Center
• Share scores to Facebook, Twitter, Mail, or Messages
• Facebook friends are included in Game Center friend recommendations
• Added Facebook “Like” button for games
• Challenge friends to beat your score or achievement

Other new features
• Adds Power Nap support for MacBook Air (Late 2010)
• iMessages sent to your phone number now appear in Messages on your Mac*
• You can now add passes to Passbook (on your iPhone or iPod touch) from Safari and Mail on your Mac*
• FaceTime can now receive calls sent to your phone number*
• New shared Reminders lists
• New sort options allow you to sort notes by title, the date you edited them, and when you created them
• Dictation now supports additional languages: Mandarin, Cantonese, Spanish, Korean, Canadian English, Canadian French, and Italian
• Dictionary app now includes a French definition dictionary
• Sina Weibo profile photos can now be added to Contacts
* Requires iOS 6

General fixes

The OS X Mountain Lion v10.8.2 update also includes general operating system fixes that improve the stability, compatibility and security of your Mac, including the following fixes:

• Adds an option to discard the changes in the original document when choosing Save As
• Unsent drafts are now opened automatically when launching Mail
• Receive Twitter notifications for mentions and replies from anyone
• URLs are shortened when sending tweets from Notification Center
• Notifications are disabled when AirPlay Mirroring is being used
• Adds SSL support for Google searches from the Smart Search Field in Safari
• Adds a new preference to have Safari launch with previously open webpages
• Resolves an issue that may cause the “Enable Autodiscover” checkbox to always remain checked
• Enables access to the Mac App Store when Parental Controls are enabled
• Support for @icloud.com email addresses
• Resolves a video issue with some VGA projectors when connected to certain Mac notebooks
• Addresses an issue that may prevent Active Directory accounts from being locked out
• Resolves an issue that may cause the policy banner to re-appear prior to logging in
• Improvements to SMB
• Addresses an issue with NIS users when auto-login is enabled
• Addresses an issue in which the Keychain may not be accessible
• Ability to pre-authenticate a FileVault protected system
• Addresses an issue that may cause Xsan to not automatically start after migrating from Mac OS X Snow Leopard

OS X Mountain Lion 10.8.2 is available via Apple’s Mac App Store under “Updates.”