Everytime there is a PS4 PRO ad, GOW is part of it:
https://www.youtube.com/watch?v=Cz8wCc36GDA&feature=youtu.be
The irony: GOW wasn't running on PS4 PRO and only on PS4 hence the 1080p only quality in the trailers and I bet they didn't even start developing the PS4 PRO version until they finish the game completely.
I also expect that we won't see any
official PS4 PRO footage for GOW even after the launch fo the console. Maybe from press and gaming sites only when playing or testing the game but an official trailer on PRO and with 4K quality? No
How many official videos we got for Horizon; Zero Dawn running on PS4 PRO? Just one gamepaly video and that was because of the PS Meeting event which was dedicated to reveal the new system that only happens once before every console launch.
Everything before and after was still running on PS4 even the new DLC.
While all the other games: Spider-Man, Days Gone, Detroit, Death Stranding. were first revealed on regular PS4 before the official reveal of the PRO,then they were all shown on PS4 PRO alongside The Lost legacy, TLOU2 and even Shadow Of The Colossus Remake.
I think, just like Horizon, GOW was deeply dived into develoment on PS4 and they were surprised by the introdudction of the PS4 PRO, that is why they will only add PS4 PRO support at the last moment (like for Horizon) unlike the other games where they had time to take full advantage of the PRO system and look even more stunning.
I don't blame SSM anyway, their game look so good on PS4 already but a video running on PS4 PRO with 4K quality similar for all the other games would be very welcome.