Longhorn Developer Preview (pre-beta)
April 2005 . Available to WinHEC 2005 attendees, MSDN subscribers, private beta testers only.

Windows Vista Beta 1
July 2005 . Available to MSDN and TechNet subscribers, private beta testers only.

Windows Vista Developer Preview 2
September 2005 (delivered at PDC 2005). Available to PDC 2005 attendees, MSDN subscribers, private beta testers only.

Windows Vista Beta 2
November 2005 (could slip to early 2006). Public availability. Microsoft is looking into delivering weekly builds to the public after Beta 2.

Windows Vista Release Candidate 0 (RC0)
February 2006. Public availability.

Windows Vista Release Candidate 1 (RC1)
April 2006. Public availability.

Windows Vista Release to Manufacturing (RTM)
June, 2006.

Windows Vista Launch (widespread public availability)
October 2006.

Longhorn Server RTM/ Windows Vista SP1 RTM
Second half of 2006/first half of 2007 (Client RTM + 6 to 9 months)

__________________
((((Sihmar_Online))))

Not Dead Yet!