An anonymous reader quotes a report from Ars Technica: Earlier this year, pictures of a new Windows look and feel leaked. Codenamed Project Neon, the new look builds on Microsoft Design Language 2 (MDL2), the styling currently used in Windows 10, to add elements of translucency and animation. Neon has now been officially announced, and it has an official new name: the Microsoft Fluent Design System. The switch from "design language" to "design system" is deliberate; Fluent is intended to define more than just the appearance, but also the interactivity. Though visually there are common elements, the system is designed to work across virtual/augmented reality, phones, tablets, desktop PCs, games consoles, using mice, keyboards, motion controllers, voice, gestures, touch, and pen, with the interactivity and input optimized to each particular form factor. Fluent is described as having five "fundamentals": light, depth, motion, material, and scale. "Light" means that the interface should avoid distracting and strive to ensure that attention is drawn to where it needs to be. With "depth," Fluent apps will make greater use of layering and the relationships between objects and interface elements. Fluent will use "motion" to indicate relationships and connections between elements, establishing context. Microsoft is using "Material" to mean making best use of the screen space and giving room to content. "Scale" means building interfaces that can go beyond two dimensions, and go beyond the size of a screen, to embrace new form factors and input methods as they arrive.