Apple today announced that OS X 10.9 Mavericks will be available as a free update today. Macs going all the way back to 2007 are eligible to install the new OS. You can download it from Apple here.
By comparison, Mountain Lion, the previous version of OS X, cost $20.
Mavericks, the tenth release of OS X, brings iBooks and Maps apps to OS X. It also includes a number of performance enhancements for extending battery life and reducing loading times. Apple SVP Craig Federighi claims that installing Mavericks on the latest MacBook Airs will give owners one extra hour of longer web browsing and 1.5 hours of iTunes video playback on a single charge.
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