From what I can tell, the whole thing is basically a PR stunt. Intel are less interested in actually displacing ARM than they are in generating lots of publicity about how they're part of that hip new IoT thing. They've funded an entire TV show called America's Greatest Makers to try and associate the Intel Curie with wearables and the maker movement, done a whole bunch of high-profile tie ins with the X Games, Lady Gaga, Arduino, BMW, etc but they've no interest in actually making it available unless it'll give them publicity.

It seems to be impossible to find official power consumption figures for it anywhere either, and the documentation is lacking in general.