My prediction: Apple is slowly working towards phasing out Microsoft products entirely, and natively supporting Windows applications in a Mac environment.
1. With the release of their own alternative to Internet Explorer and Powerpoint (Safari and Keynote, respectively), Apple seems to be slowly phasing out their reliance on Microsoft applications.
2. WINE and CodeWeavers’ CrossOver Office let Linux users run Windows applications natively, without requiring Windows (or a Windows emulator) to be installed (screenshot). Unfortunately, both applications require an x86 processor.
Apple is built on Unix and now natively supports X11. If they were smart, they’d be working on porting WINE over to PowerPC processors right now. OS X would be the only operating system capable of natively running Macintosh, Unix/X11, and Windows applications simultaneously.
If someone’s already working on something like this, let me know about it.