Mountain Lion went on sale today for $20, downloads only. Mountain Lion makes Mac personal computers work more like iPhones and iPads.
(AP Photo/Marcio Jose Sanchez)
Apple Inc. released its new operating system for Mac computers on Wednesday, with features borrowed from mobile devices and a tighter integration with online file storage.
Macs bought on or after June 11 can be upgraded for free.
Apple previously announced Mountain Lion's features, but it hadn't disclosed the exact availability date until Tuesday's release of its earnings for the April-June quarter.
Among the features of Mountain Lion: