Paul Thurrott of Wininformant has posted a review on Whistler Beta 1

With "Whistler," the next version of Windows, Microsoft has finally jettisoned the old DOS-based Windows 9x line in favor of the NT-based Windows 2000 product family. As such, Whistler will ship in the same Professional, Server, and Advanced Server versions that we saw with Windows 2000, but it will also include a Personal edition for consumers as well as 64-bit versions of Professional, Server, and Advanced Server for users with Intel Itanium (IA-64) machines. Microsoft had been promising a consolidation of its Windows product families for some time, but Whistler will be the first product that finally achieves this goal.

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