At the Worldwide Developers Conference keynote address on June 6, 2005, Jobs announced that Apple would begin producing Intel-based Mac computers in 2006.[75] On January 10, 2006, the new MacBook Pro and iMac became the first Apple computers to use Intel's Core Duo CPU. By August 7, 2006, Apple made the transition to Intel chips for the entire Mac product line—over one year sooner than announced.[75] The Power Mac, iBook and PowerBook brands were retired during the transition; the Mac Pro, MacBook, and MacBook Pro became their respective successors.[76][77] On April 29, 2009, The Wall Street Journal reported that Apple was building its own team of engineers to design microchips.[78] Apple also introduced Boot Camp in 2006 to help users install Windows XP or Windows Vista on their Intel Macs alongside Mac OS X.[79]