The upcoming release of Guardians of the Galaxy Vol 2 will be HDR10 only for the UHD Blu-ray. Dolby Vision will be available for the streaming version though. Disappointing but pre-order is still on for me. I'll probably be watching the 3D version anyways.
https://twitter.com/thedigitalbits/status/887049526531379200
https://twitter.com/thedigitalbits/status/887049526531379200