Get Windows 10: Microsoft's hidden roadmap for the biggest software upgrade in history

http://www.zdnet.com/article/get-windows-10-microsofts-hidden-roadmap-for-the-biggest-software-upgrade-in-history/

Summary:Beginning this summer, Microsoft will offer free Windows 10 upgrades to hundreds of millions of PCs. A recent Windows Update contains details about how the Get Windows 10 (GWX) program will work.