While it is unclear as to what sort of changes Apple made, it is speculated that this was not a planned update and that it was probably released to address some bugs that were spotted at the last minute, which we guess we can’t really complain about. For developers looking to get their hands on the latest build, it will not be available via the Mac App Store, but instead developers will need to hit up the Dev Center for the direct download. OS X Mavericks was announced back in the middle of the year during Apple’s WWDC 2013 event, but it is believed that the software will finally see a release, or at least have a release date shared on Apple’s 22nd of October event which will also see the launch of new iPads amongst other things.