Mac OS X has been leading secret double life. Every Mac project build for Intel and PowerPC. Every release of Mac OS X has been built for both Intel and PowerPC-based Macs. For the last 5 years. Mac OS X is cross-platform by design. Apple's demo is on an Intel-based system. Jobs shows all Mac OS X Tiger features are already compatible with Intel-based processors. Not done yet. Will put into the developer hands to help Apple finish it.