“Apple has sent out a second update to the third developer preview of OS X Mountain Lion. Changes are currently unknown, but the update is available via software update in the Mac App Store,” Mark Gurman reports for 9to5Mac.

Apple notes that “MacBook Pro 3,1 is not supported in this build of Mountain Lion. Future developer previews will restore support for this configuration,” Gurman reports. “You will need to have build 12A178q or higher installed in order to see the update. Once the update is complete, your system will be at build 12A206j.”

Read more in the full article here.

[Thanks to MacDailyNews Reader "Dan K." for the heads up.]