Last week, the USB Promoter Group announced the USB 4 v2 standard, which has a max data transfer speed of 80Gbps. There was no information provided if they plan to make 80Gbps work on existing cables, and they haven't released the USB 4 v2 specifications yet. However, thanks to Angstromics, it's likely that the USB 4 v2 cable is capable of more than 80Gbps and can support aggregate bandwidth of up to 120Gbps.
According to Liliputing, this would allow the user to connect a PC or a mobile device to an 8K 144Hz HDR display using a USB 4 v2 cable or a docking solution, because 120Gbps data transfer speed would enable support for DisplayPort 2.0’s Ultra High Bit Rate (UHBR20) protocol. But the catch here is that if you send video over a 120Gbps connection, the incoming high-speed data is cut in half, i.e., 40 Gbps.
All this is because the USB Type-C has two pairs of data links, i.e., two for sending and two for receiving data. The current general USB 4 standard supports 20Gbps per lane, meaning you could achieve up to 40Gbps at the same time. But with USB 4 v2, the speed would be doubled to 80Gbps of bidirectional bandwidth.
The USB 4 v2 standard also supports asymmetric setup. So, instead of a 2×2 transmit and receive link, it can also support 3 transmit and 1 receive link. This would mean you could send 120Gbps to a display and receive40 Gbps. There is no information about the capability yet, but there are chances that future Samsung laptops or smartphones would support it in the distant future.
