OS X 10.8.2 Developer Build 12C31a Combo Update

The first developer build of OS X 10.8.2 has been made available to Mac Developers as build 12C31a, 9to5mac notes. The update focuses on features that will probably arrive in the Fall presumably alongside iOS 6 and the next iPhone, including integrating Facebook into OS X much like Twitter, in addition to updates made to iMessages, Game Center, Safari, and Reminders.
Earlier, the first update to OS X Mountain Lion arrived as 10.8.1 and has been made available to everyone to resolve a variety of bugs and issues that impacted some Macs running Mountain Lion.
Registered Mac developers can download the 10.8.2 build through Apple’s Developer Center.

Integration with Facebook
New languages ​​for Dictation [presented at WWDC for Siri]
Adding phone number [via Apple ID] to Facetime and iMessage [Mac]
New features of iCloud [How the Shared Photo Stream]
And more and more bug fixes