http://www.techradar.com/news/hdr10-the-new-hdr-standard-thats-taking-a-leaf-out-of-dolbys-book

We’re only part of the way into the era of HDR televisions, and we already have way too many standards to be dealing with. First came HDR10, then Dolby Vision, and more recently Hybrid Log Gamma and Advanced HDR. 

If you already thought the situation was confusing then buckle up, because you’re going to have to get familiar with another standard pretty soon. It’s name is HDR10+, and it wants to bring the same advanced functionality of Dolby Vision to an open standard.