During WWDC Apple announced that next version of OS X would be called "Mavericks." Apple displayed a few new features that come with Mavericks which include: Tabs, full-screen capability, tagging, and independent handling of multiple displays.
Tagging items will allow users to categorise and search for files more easily. Mavericks also allows the user to use an Apple TV as a second screen.
OS X Mavericks introduces new power user features for the ultimate Mac experience. Tags are a powerful new way to organize and find your files anywhere on your Mac or in iCloud®. You can easily tag any file in the Finder, in iCloud, or when saving a new document. Tags appear in the Finder Sidebar to enable you to view files by project or category. Finder Tabs reduce the clutter on your desktop by consolidating multiple Finder windows into one window with multiple tabs. You can customize the view for each tab, move files between tabs, and even run the Finder with multiple tabs open in full-screen. Mavericks also makes using multiple displays even easier and more powerful. The menu bar and dock are available on any display, and users can now easily run windowed or full-screen apps on whichever display they choose, with no configuration required. With Mavericks you can also use your HDTV as a second display using Apple TV® and AirPlay®.
Amoung the new features added was an update to Safari, notification centre which now allows the user to respond to notifications from notification centre.
Apple also announced a Maps Application for the Mac that can sync with your iPhone or iPad. The Application works just like Maps on your iOS device but now allows you to manage your places and plan trips on your Mac and then sync it with your iPhone.
Maps brings advanced mapping technologies from iOS to the Mac, including crisp vector graphics, stunning 3D view and interactive Flyover™. With Maps you can plan a trip from your Mac, then send it to your iPhone® for voice navigation on the road.
Keychain which remembers all your passwords in Mountain Lion now moves to iCloud. Keychain will now also remember your Credit Card details and your wifi passwords across devices.
iBooks is also coming to the Mac which means you can now read your books on your Mac.
Mavericks is expected to be released before the end of November and will only be available on the Mac App Store. Mountain Lion cost R159.99 when it became available on the Mac Apps Store. Mavericks will most likely cost the same price.