Microsoft is making design a key theme as it tries to bring Windows to more screens, spanning phones, PCs, and TVs through Xbox. Not only will deign be a big part of Microsoft's push moving forward, but it will also be instrumental on unifying the different Windows experiences on these separate devices to create a cohesive environment.
With a similar modern Tiles-based UI spanning across various different products, Microsoft's design is often compared to the Bauhaus movement where function is stressed over ornamentation. The similar design philosophy helps to make Xbox, PCs, and Windows Phone appear related. We're already seeing Microsoft inject new design philosophies into old ideas, like the new Metro-inspired Start menu that's being leaked as part of the next iteration of Windows.
Moving forward, we can expect design changes across the various platforms to have similar meanings. As an example of this, former Nike designer and current Microsoft Live Tiles designer Albert Shum says that the "hamburger icon" will undergo some changes to bring consistency across various Microsoft products.

