Here is the list, which includes extended support for Vista and 7:
Windows XP 4/8/2014
Windows Vista 4/11/2017
Windows 7 1/14/2020
Adds the company:
Changed the lifecycle policy for extended support, Microsoft provides a consistent customer use Windows client operating system (OS) services. Will be applied the extended support for Windows 7, Windows Vista consumer products.
Available service packs for Windows XP, Windows Vista and Windows 7 product currently supported this change's customers are subject to up to 10 years of security update provides will regardless of the Edition.
More info here: Microsoft quietly extends consumer support for Windows 7, Vista
Written by: Andre Yoskowitz @ 20 Feb 2012 15:27