updated 10:00 pm EDT, Tue September 3, 2013
Remote Desktop apps, Safari 6.1 beta also released
On Tuesday, Apple released the seventh Developer Preview beta of its forthcoming OS X Mavericks (10.9) update. Registered developers can obtain the new version by signing into the Mac App Store with their developer account Apple IDs. The update has a number of changes contained in it, including new wallpapers, a new format for screen recordings, and the optional ability of users with non-Admin accounts to install software from (only) the Mac App Store. In addition, Apple released new Remote Desktop 3.7, Xcode 5 and Safari 6.1 betas.
Mavericks DP7 also continues to list iCloud Keychain as an area for testing, with several bugs still existing in its implementation. Users will be prompted to re-enable it after installing the update. Network migration from earlier versions of OS X now requires the Migration Update (for 10.6 and later) that is available from the Mac Developer Center. Migration from Windows is still not supported as of yet.
Reports from testers also indicate some problems with Aperture running in Full Screen Mode under the new Developer Preview, and screen recordings and Fusion Drive volumes created with DP7 are not compatible with earlier releases of OS X. In addition, PDFs imported into iBooks for Mac under previous releases of Mavericks can now be renamed when opened with Preview.
To go along with the Developer Preview, Apple has also updated its betas of Remote Desktop (now at v3.7), a new seed of Safari 6.1, and an additional beta of Xcode 5.
It isn't clear when OS X Mavericks will be released, though the company has said it would happen during the fall, technically giving Apple until December 20 to bring it out. Buyers are expecting upgraded iMacs and MacBook Pros sometime in the near future, presumably in conjunction with Maverick's release in the way that iOS 7 is now assumed to be released alongside forthcoming iPhones on September 10.