OS X Mavericks is free!
OS X 10.9 Mavericks will be available as a free Mac App Store download today.
Of course, there’s the usual promise of increased speed and efficiency but it will also dish out enhanced multiple-monitor support, big improvements to the Notification Center (which includes inline replies), an improved Finder, better power management, and improved performance in Safari.
Mavericks also includes a number of brand new features, including a new iCloud Keychain function to save passwords across iOS and Mac devices, new Mac apps for iBooks and Apple Maps, along with UI redesigns for a number of built-in applications.
The free update is available to everyone running OS X 10.6 Snow Leopard and above.
It’s worth noting that the discount doesn’t extend to OS X Server. The latest Server 3.0 requires Mavericks and will be available as a $19.99 upgrade from the Mac App Store