At Apple's latest press conference, it provided an update on the new Apple operating system -- OSX Mavericks can be downloaded for free from the App Store as of today. This is the first time that Apple has released an update of this magnitude for free.
The new operating system includes numerous app updates as well as aesthetics to match the flat design of the iOS7. It is available for users "running OSX 10.6 Snow Leopard and above."
All of Apple's previous operating systems have been named after big cats like Cheetahs, Pumas, Snow Leopards and Lions. This newest one is a departure from this pattern and starts a new line of operating systems that will pay tribute to locations throughout California.