Upgrading to 4K is quite the investment for a Console. I would need a 4K TV, 4K Capable Home Theater Receiver, 4K ChromeCast, PS4 Pro and Xbox X/S. Thus I haven't done it yet.
I will Stick to my Regular WiiU, PS4 and Xbox One as they work with my existing TV, Home Theater Receiver and Chromecast.
As a PC gamer its much cheaper I just upgrade the monitor (Waiting for ROG Swift PG27UQ 4K; 144hz; HDR; GSYNC; Quantum DOT) and eventually I will get the 1180Ti next year.