Earlier today, Apple posted a new developer build of OS X Lion 10.7.4 for both Client and Server editions, coming just one week after the previous update. In addition, the company has updated the last Developer Preview 3 of OS X 10.8, Mountain Lion, and also posted Developer Preview 4 of Xcode 4.4 for developers. The Mountain Lion update is notable for a new "Do Not Disturb" mode in the built-in Notifications Center, which may portend a similar feature in a future iOS version.
