Book lovers, teachers, and students rejoice: iBooks has come to the Mac--and it supports iBooks Author books, too. Apple Senior Vice President Craig Federighi previewed the new Mac version of iBooks to a cheering audience at Monday's Worldwide Developers Conference keynote, alongside other improvements in the upcoming OS X Mavericks.Related StoriesNew iMacs to launch in June or July, analystApple launches new MacBook Air with battery improvements, Haswell
