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China launches HDMI and DisplayPort alternative — GPMI boasts up to 192 Gbps bandwidth, 480W power delivery
(www.tomshardware.com)
This is a most excellent place for technology news and articles.
Graphics cards only come with one HDMI port though. The LG OLED is popular for 4k screens because it ticks all the boxes and is much cheaper than equivalent gaming monitors, but that means it doesn't support dp.
And it means that you have to upgrade the graphics card just for the cable even if it is still relatively new. The point is that we shouldn't be held back by just a cable .
My graphics card has 3 HDMI ports and two DP ports... You cannot use all at once, but three screens are supported simultaneously...
Graphics cards come with as many ports as the manufacturer wants them to. My home PC's GPU has two HDMI and two MiniDisplayPort. Also, there are cheap lossless adapters that will convert between MiniDisplayPort, DisplayPort, HDMI, DVI, etc, etc.