Metro-style UI to span across all computing devices.
At their BUILD Conference, Microsoft has launched the developer preview for the next version of their operating system, tentatively titled Windows 8.
As initially revealed at D9 earlier this year, Windows 8 takes large cues from the Metro UI seen on their Windows Phone 7 devices. The "tile" system continues to play a major role, ultimately replacing the use of icons or a traditional app launcher.

If the Metro UI isn't to your liking, you can hop between it and a Windows 7-style interface at the simple push of a button; a handy tool considering that the only way to currently completely close an open Metro app is through the Task Manager, accessible through the traditional Windows portion of the OS.

Developers will be able to download the Windows Developer Preview in the near future. For a complete guide about what Windows 8 has to offer, feel free to take a look at the Windows 8 Developers Guide.