Several noise circulating on the Internet at the moment and as a result of pages published in error on the Microsoft sites, it seems that the version (Release Candidate) Windows Seven will be available from May 5
This RC version would be the latest version of Windows 7 prior to the final version.
Concerning the final version, although no information has filtered envore Microsoft side, some manufacturers such as Acer already announcing products with Windows 7 for the month of October 2009.
Depending on the site techARP, Microsoft could offer coupons for free update Vista -> Seven for the new PC in June.
Microsoft has also confirmed it would be possible to "downgrade" Seven to Vista or XP (source).
Windows 7 beta upgrade won't be easy
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