Sony算吧啦 http://www.hdtvtest.co.uk/news/kd55x9305c-201506224127.htm
Sonys UHD (ultra high-definition) TVs still don't support 4:4:4 chroma (or even 4:2:2) at 4K@60Hz this year when LG, Panasonic and Samsung sets have been doing so since 2014.
more significance is surely the implication that the underlying chipset is not the full-fat HDMI 2.0 Level A with 18Gbps throughput, which may affect HDR playback over HDMI.