I've always been surprised that Apple hasn't pushed the technology more since the acquisition more than a year and a half ago. I can only assume that it was because they were waiting to get the experience just right - or to Jobsian standards. :-)
Knowing its coming from Apple, its likely to
- solve a few use-cases incredibly, incredibly well
- be closed (i.e. have some providers for each of those use-cases)
- but be incredibly useful.