What, specifically, did Apple announce?
On June 6 in an address to Mac developers, Steve Jobs announced that Apple would begin a transition from the PowerPC chips that currently power Mac systems to chips built by Intel. Jobs said that by June of next year, at least some Intel-based Macs would be on the market, that by June 2007 most new Macs would be Intel-based, and that by the end of 2007 the last-ever PowerPC-based Mac will have rolled off the assembly line.