Enhanced? You meean it has yet more extraneous character history even than the original one did? What, do we go back eight generations of family now instead of four when a character is first described? It's an even bigger doorstop? Even more trees were sacrificed for the print edition? "A man traveling back in time to prevent JFK’s assassination unleashes unexpected consequences" No, they're entirely expected. Apparently only the idiot book blurb writer thinks they were unexpected. Yawn.
