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Longhorn is the next major version of Windows. Planned for somewhere in the year 2005, this new version will solve all your problems, thanks to it's revised task-based (or "iterative") user interface, an extensible, dock-like and XML based, Sidebar, and a SQL Server 2003-based storage engine called WinFS (Windows Future Storage).

According to Paul Thurrott's FAQ, Windows of the future will be more user-friendly than today's Mac OS: Longhorn will make the screen more photorealistic and deep by using 3D video hardware to render special effects.

Slowly, the future is coming. The start button looks like promising for now. But if I follow correctly Microsoft's promise history, they seem to always deliver one major version later.