Apple has seeded a new version of Mac OS X 10.6.3 to developers today. The last seed was released on January 22nd. According to reports, the newest version provides a number of enhancements and bug fixes for QuickTime X, 64-bit Logic, printing and OpenGL.
Apple Seeds Mac OS X 10.6.3 (Build 10D548)
Apple Seeds Mac OS X 10.6.3 (Build 10D548)