We present the name Avalon as codename for graphic subsystem which Microsoft plans to release with Longhorn. As we said in our previous article Avalon will be available for Windows XP and some other versions of Windows as well.
The easiest way to describe it is the fact that Avalon is basically DX10, or "DX Next", wrapped under a User Interface. OpenGL will run on top of it due to security reasons, but Avalon tends to remove the bad old legacy habiits of the old DirectX marchitecture.
We also can confirm that Longhorn will introduce a 3D desktop and therefore Avalon will have to fix some stuttering effects that occur in the current DirectX.
Avalon will change the look of the desktop I believe that is the most important aspect for most of us. Whether we want it or not, even our mobile phones will have 3D interfaces not to mention our Windows. It's an inevitable future that we simply can not escape. µ