Finder Tab:-Finder with multiple tabs open with full-screen.
Tags:- Add tags to documents, folders and your stuff so easily find what you’re
looking for without any trouble Instead, you can just browse by tag.
Multiple Display Enhancements
:-Ability for desktop activity to be wirelessly beamed to a HDTV via an Apple TV box
Battery Life Improvements
:-Reduce CPU utilization in OS X 10.9 using App Nap technology
usage, and other speed improvements like smooth and fast scrolling.
iCloud Keychain:-Save your passwords and sync them with your i devices
Maps:-Maps application where you can look up directions and send them straight to your
iBooks and Newsstand:- It enabling you to read your favourite books and magazines on any Apple device