Apple also has released a new version of iTunes 12 for OS X Yosemite. This software update, build 14A329r can be downloaded via the software update option on the Mac App Store.
The new public beta is likely to bundle the content introduced in the last serveral developer updates, also including multiple deisgn changes added with DP 6. The last beta included a new System Preferences design, new wallpapers, a translucent dashboard, several icon updates and more.
Apple will release OS X Yosemite to the general public later this October at an event which may also introduce both iWatch and new iPads. We have done a special story “Everything about OS X Yosemite” which you can read.