A seventh beta of OS X 10.8.3, Apple's forthcoming maintenance and security update for the Mountain Lion operating system, was supplied to developers on Wednesday.
People familiar with the latest pre-release software said it is identified as build "12D54." Any changes that may have been made to the software from its previous release are unknown.
Its release comes just over a week after Apple provided the last beta of Mountain Lion. That test software contained only minor changes from the previous build.