Windows Vienna (code name Blackcomb) is the commercial name for the successor to the soon-to-be released Windows Vista (code name Longhorn). While Windows Vista is intended to be a technologies-based release, with some UI changes (in the form of the Aero set of technologies and guidelines), Vienna is targeted directly at revolutionizing the way we interact with our home and office PCs.

The Explorer shell is expected to be replaced in its entirety, with features such as the taskbar being replaced by a new concept based on the last 10 years of research from Microsoft’s “Vibe” lab. Projects such as GroupBar and LayoutBar are expected to make an appearance, allowing users to more effectively manage and keep track of their applications and documents while in use, and a new way of launching applications is expected - among other ideas, Microsoft is investigating a pie menu-type circular interface, similar in function to Apple’s dock feature.

Source : Neowin.net