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Road to Mac OS X Snow Leopard: 64-bit to the Kernel

MacDailyNews found this 10/28/2008 on appleinsider.com

Build notes leaked on the web of a prerelease version of Mac OS X 10.6 Snow Leopard indicate that the software only supports enabling its new 64-bit kernel on certain machines, including the Xserve, Mac Pro, and MacBook Pro, but this does not mean Snow Leopard's kernel will be limited to 32-bit ...