Microsoft today unveiled its new design language for Windows 10, called the Microsoft Fluent Design System and formally known as Project Neon. This new design language is an "evolution" of Metro, first introduced in Windows 8 back in 2012, and it includes several new design elements and functionalities that developers can take advantage of.

The goal of Fluent Design is to deliver harmonious, intuitive, inclusive and responsive cross-device experiences and interactions. Developers will be able to build beautiful, expressive apps with the Fluent Design language, with animations, blur and fluidity, according to Microsoft.

Windows Insiders will have already seen this new Fluent Design System in action via first-party Windows 10 apps. For example, Microsoft recently pushed updates to Groove, Calculator, Films & TV, and more, that introduced improved user-interfaces within the apps, including blur and hover animations. Developers will now also be able to develop apps officially using the Fluent Design System, with the design language also coming to the OS over time too.