New Features available on Os X El Capitan:
-Split View:
Split View is the feature every Mac user wants but it is just a copied version of Windows`s multitasking feature.
-Updated Mission Control
-Spotlight can now connect to more services
-Now you can minimize the email that you are writing
-Multitasking gestures on the Mail app
-New Notes app (like the one on iOS 9
-Updated Photos App
-Updated Safari
-Transits on Maps
-Metal and Swift is now available on OS X.
-Swift 2
My Review of OS X El Capitan:
I really don`t like the name of it but the new features are really good for Mac users while Windows users had this features for really long while. Talking about Developer Preview it is not really buggy which is a good thing. But it is not a "major" update so I am not really excited about it ...