That’s according to sources close to the company who requested anonymity. They said that Microsoft unveiled the name in Atlanta on Thursday at the company’s internal sales event, known as the Microsoft Global Sales Briefing, or MGB.
Word of Longhorn’s new name began leaking to the Web on Thursday evening. One Windows site discovered that Microsoft registered the WindowsVista.US domain name. Microsoft is expected to make the official announcement of the new name on Friday morning.
Microsoft has relied primarily on date-oriented names for many of its products, although it has shied away from those on occasion.
The last major version of Windows, code-named “Whistler,” eventually was christened Windows XP.
Microsoft officials declined to comment on the specifics of a “Longhorn-related” news announcement slated for Friday morning.
Longhorn Beta 1 is widely expected to be unveiled next week. Beta 2 is due in the first half of 2006. Microsoft officials confirmed on Thursday the final release is still on track for the latter half of 2006.
[Source]