The latest developer's build of OS X 10.7.4 is now available to developers at the Mac Developer Center. Build 11E46 was seeded as a 1.4 GB combo update or a 716 MB delta update. It comes a month after the first seed of the latest update to Lion was pushed to developers.
There are no known issues in the build. Focus areas include the Mac App Store, Graphics, Mail, QuickTime, Screen Sharing and Time Machine.