Apple today released the eighth preview of its upcoming software, OS X Mavericks to developers.  This latest preview comes approximately two  weeks after Preview 7.

OS X Mavericks brings a host of new changes, among those changes include: iCloud Keychain, Multiple Displays, iBooks for Mac, Safari 8, Maps, and more.

Also released is a new Safari 6.1 seed, sent to Safari developers.  It can be downloaded from the safari developer center.

OS X Mavericks is expected to be released in late October.  Developers can download the lates update from the Developer Cneter online or via software update from the Mac App Store.