This document provides an overview of estimated support timelines for various Microsoft products including Windows, Office, Windows Server, and System Center. It shows the expected release and retirement dates for different versions and service packs, as well as periods of mainstream versus extended support. Key dates include Windows 7 reaching end of support in late 2019, Office 2010 in mid-2020, and Windows Server 2008 in mid-2018. The document is a useful reference for planning around Microsoft product lifecycles.