Mac OS X 10.6.6 was an update to Mac OS X 10.6 released on January 6, 2011. It had the following features: The Mac App Store, a new application you'll find in the Dock, includes the following features: * Discover Mac apps: Browse featured apps, top charts, and categories, or search for something specific. * Buy and install: Easily purchase apps with your iTunes account. Apps install in one step and are quickly available from the Dock. * App updates: The Mac App Store keeps track of all your purchased apps and notifies you when free updates are available. Additional improvements