Apple recommend to use sRGB. I can't find any documentation to state that ICC is supported, so I guess the short answer is "no."
There is an interesting article here about using images with IBA:
David also wrote a good article about image sizes:
While you can use various ICC recipes to craft a workflow and images that target iBA books, iOS does not support ICC profiles.
Optimizing performance in your iBooks Author books [ support.apple.com/kb/HT5117 ]
Suggest jpeg for digital images...pngs otherwise. As always, be sure to test with your particular content on a device to insure in matches out