Microsoft has made yet another step forward in the evolution of Windows 7, past the Milestone 1 and Milestone 2 builds already available, with M1 even leaked outside of the testing program. In this regard, Windows 7 Build 6780 Milestone 3 is live. The Redmond giant has failed to confirm any detail related to the actual development milestones of Windows Vista's successor. But while the company's official mouthpieces remain mute, the members of the Windows 7 select testing pool have indicated that M1 and M2 are things of the past, as M3 is now moving to center stage.

Microsoft is, of course, preparing for the Windows 7 roadshow consisting of a variety of events in the October-November timeframe including the Professional Developer Conference 2008, Windows Hardware Engineering Conference 2008 and TechEd EMEA 2008. According to UXEvangelist and WinSuperSite, Windows 7 M3 Build 6780 is no longer a simple, internal variant of the next iteration of Windows, as it was shipped outside of Redmond to the company's closest partners

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