OS X Yosemite developer preview 6 now available, developers, go get it!
Apple has released the sixth developer preview of OS X Yosemite. You can download DP 6 from the Mac App Store on a Mac running an older developer preview of Yosemite, as well as from the Mac Developer Center.
This version is only for registered developers. However, Yosemite is also available in beta for certain customers as part of the public beta program.