NanoTech Entertainment’s 4K-only UltraFlix OTT service is adding HDR to its 4K offerings, support for MPEG-DASH and has a deal with Verizon Digital Media for a CDN that’ll stream UltraFlix’s 4K content to viewers. UltraFlix, which has abandoned the net top it started with, is an app that’s on a wide range of UHD TVs from different setmakers. UltraFlix has a very big potential market and it’s one that is growing. It said it expects that its app will be on more than 95% of all 4K TVs and set tops this year and that IHS forecasts that in the States more than 15 million 4K TVs will be sold in 2015 and more than 40 million in 2016. Verizon…