Windows: 89

"Windows 89" is a historical anomaly—a product of a naming coincidence regarding Microsoft Excel rather than an actual operating system release.

There is no official Microsoft operating system called "Windows 89." The company's major releases in that era were Windows 2.0 (1987), Windows 3.0 (1990), and the never-released Windows 1.5 (internally). However, "Windows 89" is widely recognized in tech enthusiast circles as a conceptual design project or a mythical "lost" OS —a retro-futuristic reimagining of what Microsoft could have released in 1989 if design and functionality had leaped forward. This report covers the known fan project and why the name persists. windows 89

I think you may mean Windows 8.9 or more likely Windows 8, as there isn't a widely known version called Windows 89. "Windows 89" is a historical anomaly—a product of

No major "Windows 89" beta or release exists in Microsoft’s archives. The name is purely fictional. This report covers the known fan project and

In 2018–2020, designer published a complete UI mockup set called "Windows 89." The concept gained cult status for its imagined features: