Under these guidelines, mainstream support for Windows Vista is set to end in less than two months, on April 10, 2012
But, now Microsoft has come up with an extension of support for Windows XP, Vista and Windows 7.
The Official Press Release was issued in Microsoft Japan Website.
Later the change in the support dates were updated on Microsoft US Website
According to the new Support scheme, Customers with the most current Service Pack will get the support for 10 years.
Support end date for Windows XP, Windows Vista and Windows 7 are as follows:
Windows XP -- 8 Apr 2014
Windows Vista -- 11 Apr 2017
Windows 7 -- 14 Jan 2020