So does this mean that you will not be able to use a regular mouse with Lion? I guess a Mighty Mouse will work but what about people who want to use 3rd party mice with multiple buttons? Gamers and designer are SOL?
The other question is "What is the default behavior?". If I plug a mouse without a scrollwheel into my iMac, do scrollbars show up by default? It seems a sensible way for them to handle that case, but we'll see.