updated 10:20 pm EDT, Wed August 21, 2013
Only minor enhancements; expected to launch in the fall
On Wednesday, Apple seeded the sixth Developer Preview of the next major upgrade of OS X, called Mavericks (10.9) to developers. Apple appears to be back on its normal development cycle following the disruption of the Developer Center due to a security intrusion in July. The latest update comes two weeks after the fifth DP, which introduced iBooks for the Mac to the upgrade. Registered developers can download the software from the Mac App Store or Software Update. The final version is expected to arrive in September.
The update arrives with no significant reported enhancements, just bug fixes and minor tweaks. The final version will include new additions such as Finder Tabs, Apple Maps for OS X, and a number of processor-management enhancements that should further extend battery life for portable users, among other features.