How much harder is The Witcher 3 NG+? Here's some gameplay and impressions...
http://www.eurogamer.net/articles/2015-08-18-video-the-witcher-3-ng-ps4-gameplay-impressions
http://www.eurogamer.net/articles/2015-08-18-video-the-witcher-3-ng-ps4-gameplay-impressions