One week after the previous seed, Apple today released a new build of OS X 10.8.3 to developers. The latest version, which arrives as build 12D78, represents the 13th developer seed since Apple began developer testing last November.
We had previously heard that Apple was seeding the prior 12D76 build to employees, suggesting that a public release might be imminent, but it seems that Apple is continuing to make final tweaks to the operating system update.
Article Link: OS X 10.8.3 Build 12D78 Seeded to Developers