No, this is not a joke headline. The Macintosh Business Unit (MacBU) at Microsoft just completed the deal, to be finalized this month, to acquire Connectix's Virtual PC for Mac, Virtual PC for Windows, and just-about-to-be-in-beta Virtual PC Server software products. The MacBU has made several announcements over the last few months that have tied its products more closely into the Windows world, including a recent roadmap for an Entourage plug-in that will give it substantial Exchange server integration for group calendar and contacts; Entourage can use POP to work with Exchange for email currently, but with little added sophistication.
More on this, obviously, in an upcoming Practical Mac column in The Seattle Times. I'll be curious to get Apple's reaction, but this is certainly a strong indication of Microsoft's continued commitment to development on the Mac platform -- or possibly an escape plan. If they tweak Virtual PC to work fast enough, they could just develop Office for Windows and bundle Virtual PC with it as the Mac version...