Why Microsoft is calling Windows 10 'the last version of Windows'

"Right now we’re releasing Windows 10, and because Windows 10 is the last version of Windows, we’re all still working on Windows 10." That was the message from Microsoft employee Jerry Nixon, a developer evangelist speaking at the company's Ignite conference this week. Nixon was explaining how Microsoft was launching Windows 8.1 last year, but in the background it was developing Windows 10. Now, Microsoft employees can talk freely about future updates to Windows 10 because there's no secret update in the works coming next. It's all just Windows 10. While it immediately sounds like Microsoft is killing off Windows and not doing future versions, the reality is a little more complex. The future is "Windows as a service."

Microsoft has been discussing the idea of Windows as a service, but the company hasn't really explained exactly how that will play out with future versions of Windows. That might be because there won't really be any future major versions of Windows in the foreseeable future. Microsoft has altered the way it engineers and delivers Windows, and the initial result is Windows 10. Instead of big releases, there will be regular improvements and updates. Part of this is achieved by splitting up operating system components like the Start Menu and built-in apps to be separate parts that can be updated independently to the entire Windows core operating system. It's a big undertaking, but it's something Microsoft has been actively working on for Windows 10 to ensure it spans across multiple device types.