Ruiz responds, "We are working with Microsoft very closely to continue to stay on track with their release of the software. There is nothing substantial to add beyond that."It's important to keep in mind that the Athlon 64 doesn't need a 64-bit operating system to be competitive with Intel's Pentium 4 line, or even AMD's own Athlon XPs. However, we may not see an AMD64 version of Windows XP on store shelves until a year after the Athlon 64's launch, and that's not good for enthusiasts looking of make the most of AMD's new platform.
Hardcore enthusiasts can already get an AMD64 fix from several flavors of Linux, but beta software and drivers is the best the Windows world can do at the moment. A Windows delay certainly isn't the end of the world for AMD64, but it's a pretty big strike against the platform.