Stuff.tv have confirmed via Twitter that the PS4 Pro does not play 4K Blu Ray’s. Here are the following tweets.
It looks very much as though the PS4 Pro does NOT play 4K Blu-rays. Trying to get confirmation. #PlayStationMeeting
— Stuff.tv (@StuffTV) September 7, 2016
Confirmed: PS4 Pro does NOT support 4K Blu-ray ?#PlayStationMeeting
— Stuff.tv (@StuffTV) September 7, 2016
Confirmed: No Ultra HD Blu-ray in the PS4 Pro. Only 4K video via streaming/apps. https://t.co/yF8L0zE2LM
— Richard Lawler (@rjcc) September 7, 2016
This is a big blow for the PS4 Pro as the Xbox One S even supports 4K Blu Rays, it could be very possible it will be patched in at a later date but at launch it will not.