Now folks, you have to take this with a pinch of salt, because old Gatezy has been known to make things up on the spot before. Anyone remember Windows 97? And I seem to remember reading something about a Macintosh / Windows marriage OS that ran on Mac and i386.... Maybe in some alternate universe somewhere. Anyways, The Register had this to say:

"Microsoft's next major version of Windows, Longhorn, will be a client OS only, Microsoft's objective being not to trouble its customers with a major server OS upgrade so soon after .NET Server 2003 ships. But from what Microsoft senior vp for Windows Brian Valentine was saying at Microsoft IT Forum in Copenhagen this week, Longhorn the client is going to be sufficiently radical for companies to have to make major changes in their server OS anyway....."

Read more: The Register.