For further clarification, these drivers do NOT solve the whole issue. It seems that only a superficial layer of drivers has been provided by Apple and no-one is looking for a full solution.
While the Apple drivers do add multi-touch support, this is pointless as it also makes the standard mouse functions almost unusable. Unless you are careful to place the correct combination of fingers on the mouse at all times, the cursor movements are jittery and frustrating.
I can reproduce this type of behavior simply by resting the edge of my palm on the mouse and attempting to move the cursor. The movement becomes erratic until I place my index and middle finger in the right spots.
To further complicate things, it seems that if you do attempt to use the scroll features the mouse commands quickly become overloaded and the mouse cursor freezes for a few seconds and then spits out the commands as they were input.
What seems to be lacking are proper drivers to fine tune the device and prevent accidental input. Perhaps the Apple bluetooth drivers sorts this out on Mac hardware, but any Windows user will find themselves very disappointed.