Mavericks is the marketing name given by Apple to their latest operating system, OS X 10.9.

Mavericks was released on 10/22/13, and is a free OS X upgrade to anyone that has a compatible Mac. It must be downloaded through the Mac App Store, and require entering an Apple ID to install.

If the Mac is currently running OS X 10.7 or 10.8, it should be compatible with Mavericks. Some Macs running OS X 10.6 are also supported. For a full compatibility list, and basic overview of the upgrade process, see

As of this blog post, Apple has not released any OS updates to Mavericks, and it is still at OS X 10.9.0. As with previous Apple OS upgrades, Mavericks is experiencing major growing pains.