Get ready to receive important Windows updates faster than ever. Just weeks after the Creators Update was released, Microsoft announced plans to launch new versions of Windows "twice a year": once in March and once in September.
The announcement came quietly in a post on the Office 365 ProPlus blog. Apparently the company is preparing to align Windows 10 updates with the applications of the company's Office. 
This change is mainly to reassure business customers who may not be so happy that Window 10 will always have new features at seemingly arbitrary dates. The upcoming six-month program reassures the company's corporate customers' expectations and provides some stability to developers who have to implement these updates on numerous computers.
The oldesti know this particular change is a huge step compared to the times when we waited years for major new Windows features, even when macOS had major updates every one to two years.
With this announcement, Microsoft is stepping closer to its goal of creating and running Windows 10 as a service that can quickly respond to user wishes. It's certainly not something unknown, since Ubuntu and other Linux distributions work with fixed six-monthly updates.
As for what comes in the next version of Windows (codenamed Redstone 3), the most exciting would probably be the UI revision that the company called Project Neon.
Window Insiders already have and experience the second build of Redstone 3, but it is rather early to talk about the new features.
