The Windows 10 looks similar to when it was released in 2015, but as part of a WinUI project, Microsoft hopes to bring round corners back and provide real Fluent Design. globallyThere are rumors that Windows 10 operation center, start menu, and even taskbar will be UI adjusted by 2021.
The proposal also suggests adding a new one
Please note that the proposed user interface is still under consideration and Microsoft is looking forward to feedback from the developer community. As we mentioned at the beginning, the goal of winui 3 is that it should be available anywhere (Win32, uwp, etc.), so the newly proposed design will only reach all applications if the developer is interested.