It feels a bit obvious that Apple would want to include some sort of DRM on iPad books purchased through the iTunes store. The interesting bit is that it appears that publishers will have the option of choosing whether to use Apple's FairPlay DRM technology or to keep their ebooks DRM-free. Even though the format supported will be ePub, which is an "open" format, it doesn't mean that the books themselves will be DRM-free. [Apple Insider]