8 of 30Image
During the early stages of Longhorn UI ideation, countless mock-ups were dreamed up, mocked-up, then sifted through to land on the right candidate(s) for designers and developers to pursue. Here's an example of an extremely wild Longhorn UI concept that never saw the light of day much beyond what you see here.
Every aspect of Windows was being addressed and given a massive facelift, as well as a functionality lift. This is one of countless login screens that were mocked-up by designers working on Longhorn.
During PDC 2003, Hillel Cooperman (Tjeerd Hoek's partner in crime on the MSX team) gave an unbelievably exciting, no-pictures-allowed (though some folks, like Paul Thurrott, were given permission to take and share some pictures at the time) demonstration of Windows Longhorn that was MUCH more ambitious and FAR more visually-exciting than the Plex-themed Longhorn.
Though you can't tell from this screen shot, the background, called Aurora, animated and was to be realized via a then-new markup language called XAML. For the first time, Microsoft was going to make it easy for developers and designers to work together seamlessly -- or so, that was the goal.