Federighi announced that the next installment of OS X is called Mavericks, and will launch in Fall 2013. According to Federighi, this new naming convention will carry Apple through the next ten years, and is based on inspiring places in California.
OS X Mavericks has several new features, including a slew of under-the-hood improvements; updates to Safari, Calendar, and Notifications; new password syncing options via iCloud; and now has versions of Maps and iBooks for the Mac. Federighi showed off three other features: Finder Tabs, Tags, and Multiple Displays. (Tags clearly pleased at least one audience member, who shouted "YES!")