Today Apple announced Mac OS X 10.11 El Capitan, during the WWDC 2015 keynote. The upcoming update to Apple's desktop platform brings several new features, enhancements and improvements aimed at improving productivity and entertainment.
Pinning Tabs in Safari
You can now pin browser tabs in Safari by simply dragging them to the left of the browser where they will be pinned. Opening any new link from within the pinned tab will open that link in a new tab.
Spotlight has been updated to search using more places, including weather and sports score. Spotlight can also be resized and moved to any part of the screen as well.
Full Screen View in Mail App
Users will now be able to access the Mail app in full-screen mode while allowing you to add tabs to a New Message windows.
With multiple desktops, you will be able to give yourself more room to work with on your Mac. The Space Bar key is now at the helm of this seamless function.
Split View and Snap Feature
Two Windows can now be arranged side by side and the sizing of the windows will be done automatically. Similarly windows will display a snap behavior when they are arranged, similar to what Microsoft offers in its own Windows operating system.
Audio Button in Safari Address Bar
Safari, now displays an audio speaker icon in the address bar for any audio the web page might be playing. This is a feature already available to Google Chrome users. Users can click the icon to mute the audio as well.
Natural-language Search Throughout the OS
This new feature allows you to make queries using natural language in the written form. For Example “How many unread emails do I have in June?”
A new gesture based system has been introduced somewhat similar to iOS. For example, using gestures users can quickly delete messages from the Mail app, without having to hunt for the delete button.
Apple says that OS X El Capitan is much faster than OS X Yosemite, and apparently it’s twice faster than Yosemite in switching apps, and about 1.4 times faster when launching new apps.
The technology that enhanced gaming development on the iOS platform, is now coming to Mac as well, promising a huge round of improvement for future games on the platform.
source - Apple