Sony ha respondido respecto a la actualización para Dolby Vision:
https://www.flatpanelshd.com/news.ph...&id=1516616887

“Select Sony TVs will support Dolby Vision with the software update to be rolled out in Europe within February, 2018. After the Sony TV receives the software update, devices with Dolby Vision playback (such streaming media players and UHD Blu-Ray players) that are connected to the Sony TV by HDMI will also require a software update to support Dolby Vision playback through the device. For more info on the timing of an update to a particular player, please contact the player’s manufacturer.”

Resumen: que ahora son los reproductores los que deben actualizar su firmware para que la TV reconozca la señal en Dolby Vision.