Alongside today's release of OS X 10.8 Mountain Lion Developer Preview 2, Apple also seeded the first pre-release version of OS X 10.7.4 to developers for testing. The release arrives as Build 11E27.
Apple has reportedly asked developers to focus their testing efforts on Address Book, Graphics, iCal, Mail and Printing in the new build, which also contains one documented known issue related to playing purchased iTunes content through QuickTime.
A separate pre-release version of OS X Server 10.7.4 is also available.
Article Link: Apple Seeds First Developer Beta of OS X 10.7.4