I read that LTSB only gets Security updates, but what about bug fixes for the supported features and components? I think I saw quite a few of them in Cumulative Update listings. I know LTSB does not get new features, but Anniversary Update for Current Branch added WDDM 2.1 support, which provided support for HDR. Did WDDM 2.1 apply to LTSB? Is there a way to check?