Microsoft Products Support Lifecycle

Use this below webpage to know the product support life cycle for Microsoft products which gives you the deadline for a particular product support in advanced to prepare the environment for future product upgrades or alternative solutions

Microsoft Products Support Lifecycle Policy

http://support.microsoft.com/gp/lifeselect

Support Lifecycle Index

http://support.microsoft.com/gp/lifeselectindex

Microsoft Support Lifecycle Policy Guidelines

http://support2.microsoft.com/lifecycle/?LN=en-us