It has been tough to keep this one under wraps but I can finally talk now. Yahoo! is shifting the communication and instant messaging landscape. The new Yahoo! Messenger for Windows Vista is one of those seminal applications that demonstrate what good user experience really is. See the video and decide for yourself. This application is built on Windows Presentation Foundation (a .NET Framework 3.0 component and part of Windows Vista).

This isn���t just a re-skinned version of the existing messenger app... this was built by Eric and his ace team from the ground up. A tip o��� the hat to Karsten for tirelessly making sure all of Yahoo!���s questions and concerns were responded to promptly; whether he was hunting us down via discussion lists or on the phone or even setting up face to face meetings, Karsten was a bull-dog you couldn't get away from. Props to the good folk from frog for the kickass design.

This app is a powerful showcase for WPF and Windows Vista features and a testament to how designers and developers can work together on building great applications.

Tags: Yahoo, Yahoo Messenger, WinFX, WPF, Windows Vista