After seeding the Third Beta of 10.7.4 to developers, Apple has seeded the fourth build of OS X Lion 10.7.4 to them.
Build 11E52 lists no known issues and asks developers to focus on graphics, iCal, Mail, Printing, and Time Machine. The fourth build of 10.7.4 weighs in at 1.43 GB for the combo. Update would come for 716 MB for the delta update.
OS X Lion 10.7.4 Build 11E52 has come just ten days after the previous build of 10.7.4. A shortening timeframe between builds generally suggests that the update is getting closer to public release.