QuickDraw 3D and QuickTime VR are now fully integrated within QuickTime, rather than being separate technologies. Very cool stuff. See Klugeharp Sprite Sample and FireWalker Sprite Sample to look at some sample wired movies. Everyone's awake now. The hardware strategy I outlined above got repeated in more detail, and they showed off the speed of the iMac.
Zip drives available by the time it ships.
The Altivec architecture got some mention. Motorola has the complete docs on it, but suffice it to say that it'll speed up some parts of the MacOS in a big way. Tools will be available in the second half of 1998. 3 GFlops on FFTs. No more gunky low-memory globals.