Although by the time it finally sees daylight, it'll be a very rotten apple... This from PCMag: The first day of WinHEC 2004 (the Windows Hardware Engineering Conference) in Seattle had, as expected, a major track on Longhorn. It focused on the new user interface and what Microsoft is planning for its next-generation operating system. A big part of it could be summed up in a word: 3D. 3D graphics on a PC have long been stuck with a "for games only" reputation. Of course, you could rightfully argue that 3D performance has been the driving force behind most recent PC performance increases; usually, the "application" that needed all the horsepower your PC could muster wasn't an application at all, but a high-powered 3D game. But now the shroud of illegitimacy is about to be lifted, as Microsoft prepares to rely on 3D performance to power its Longhorn operating system. Avalon is the code name for the Longhorn graphics and media interface (GUI) that software developers will use to build applications. It will have two "tiers," called Aero and Aero Glass. Given its 3D nature, running Avalon will require some pretty hefty hardware. Microsoft also surprised some people by requiring DirectX 9 to run Avalon, even though chips supporting this latest version of DirectX are just coming to market. Still, with Longhorn not arriving until 2007 (at the earliest), perhaps the DX9 requirement isn't such a reach. Full report here So, by 2007 You can have an OS that looks like OSX, but only if your machine falls into what MS calls the "Average" user spec: Is this the real reason for the Longhorn release date slipping? They're waiting for the hardware to be developed that can run it? Anyway, if you can't wait, you could sample the delights of something that looks like OSX now - OSX!