Entire Mac interface was re-written. Dialog boxes drop out of title bar so that it is associated with the document that you are working with. Requires a minimum of 64 Mb on G3 or G4 or better. It will run on iMacs. Other features need to be demo'd in order to really get the idea.
Menus are semi-transparent and possibly customizable.
Will be released late second quarter this year and will be installed on the new machines in January 2001. Software to make a movie. One of them used for the new ad for iMacs. Software is called iMovie. Little kids on the ad are the children of one of the senior executives at Apple.