Some of the lockups that were reproducible have definitely been fixed. It will take extensive testing to get the final word on this, but the lockup situation seems much better. One of the major areas of improvement is that fast review mode can now be used without locking the camera up. The lockup situation is much improved. I have not had to reset the camer by opening the battery door even once since upgrading.
Macro mode does have faster focus now.
This is an improvement. I don't think that the focus is any better as far as what the camera decides to focus on, really, just faster. Still, an improvement. However, the camera is now even harder to focus in macro mode. It consistantly locks on to any background in back of the object that you are trying to focus on.