According to the latest news, the radeon RX 7000 Series graphics card based on the next generation rnda3 will support the DisplayPort 2.0 standard. Famous informant @ Kepler_ L2 said in the latest tweet: "it seems that rdna3 supports the full DisplayPort 2.0 specification (uhbr20)".
Uhbr is the abbreviation of ultra high bit rate certification, which allows the highest connection throughput on a compatible display cable. At present, the certification has three levels, namely uhbr10, uhbr13.5 and uhbr20. As long as the receiving connected equipment can correctly provide output, each level will produce different levels of display output.
The last level uhbr20 provides a bandwidth of 80 Gbps, which is much higher than the HDMI 2.1 standard that only provides 32 Gbps, and much higher than the DisplayPort 1.4A that provides 48 Gbps bandwidth.
The patch marked "DML change of dcn32 / 321" on the freedesktop from AMD confirms that AMD is preparing to add DisplayPort uhbr20. "DCN" is the abbreviation of display core next developed by AMD.
After enabling the DCN of uhbr20 in DisplayPort 2.0, the full resolution that can be released can be calculated, and the output is 16K image resolution. This output involves display stream compression or DSC, which will produce 10K output without any compression, or the ability of two HDR screens with 8K output and 120 Hz refresh rate on each display.