Apple officially released the beta OS X 10.8.4 system, but did not elaborate on what updates and new features the new beta system contains.
According to people familiar with the matter, the current OS X 10.8.4 beta version number is 12E27, and the previous OS X 10.8.3 official version just two weeks ago, the version number is 12d78. The beta system is currently open only to Appleseed Test members and is not expected to be formally released to all developers in a very long time. According to MacRumors, Apple has asked participants to focus on testing WiFi, Safari, and video-driven content.
It is worth noting that this beta update does not provide a way to update through the Mac App Store, so it is necessary to download the Appleseed test members and install them separately.
Two weeks ago, Apple had just launched the official version of OS X 10.8.3, in addition to upgrading Safari to 6.0.3 and enhanced itunes integration, fixes a number of known bugs and adds a boot camp plug-in that allows Mac systems to run Windows 8.