In the months before the release of Windows 95 (1995), Microsoft distributed a floppy disk promoting the OS in various PC magazines. It contained an interactive guide showcasing 95’s new features, & the ability for users to check their hardware & software compatibility with 95.
Windows Thin PC (2011) was a light version of Windows 7 (2009) aimed at business PCs with legacy hardware. It was the successor to Windows Fundamentals For Legacy PCs (2004) - which was based on Windows XP (2001) - & was only available via Microsoft’s Software Assurance Program.