According to Mac Rumors, Apple has seeded another beta of 10.6.7 to developers.
The build — labeled 10J860 — has no known issues, like the previous build. Release notes ask developers to focus testing on Safari, the Mac App Store, AirPort, Bonjour, SMB, and graphics drivers.
10.6.7 is expected to be released at some point to the public. At least, that’s what we’ve heard.