A second beta version of Mac OS X 10.6.8 has been seeded to developers with no known issues.

Apple Insider reports that focus areas for developers include Airport, Graphics Drivers, Mac App Store, Networking, QuickTime and VPN.

The Combo Update and the Delta Update for Mac OS X 10.6.8 build 10K524 are both 1GB downloads.

The first beta was issued over the weekend, coming alongside Developer Preview 3 of Mac OS X 10.7 Lion.

Mac OS X Lion is expected to be unveiled at the WorldWide Developer Conference in June and fully launched at some stage this summer.