>Umm.. sorry but M$ SAY that Windows 7 is REVISION of Windows Vista!!
I have not seen such a statement anywhere. Where did you see it?
The Spanish Wikipedia article you reference seems to totally someone's opinion with no references. The English Wikipedia tells a completely different story--with references.
http://en.wikipedia.org/wiki/Windows_7
"In 2000 Microsoft started the planning to follow up Windows XP and its server counterpart Windows Server 2003 (both codenamed Whistler) with a major new release of Windows that was codenamed Blackcomb (both codenames refer to the Whistler-Blackcomb resort). This new version was at that time scheduled for a 2005 release. ...Later, Blackcomb was delayed and an interim, minor release, codenamed "Longhorn", was announced for a 2003 release."
Longhorn became Vista, and Blackcomb is now Windows 7.
"As major feature work on Windows Vista wound down in early 2006, Blackcomb was renamed Vienna.[11] However, following the release of Windows Vista, it was confirmed by Microsoft on July 20, 2007 that "the internal name for the next version of the Windows Client OS"[4] is Windows 7, a name that had been reported by some sources months before."
For more details, read the Wikipedia article shown by the above link.
Of course, it becomes a philosophical discussion as to how much change makes a new version or a service pack. All versions of Windows have contained code from previous versions. So, one can call it a service pack upgrade, but Microsoft is calling it a new version.
"We're hard at work, I would say, on the next version, which we call Windows 7." -Bill Gates (Reference 14 in the Wikipedia article).
Regards,
James