I haven't looked into anything so I can talk, yay!
Are we expecting it to use usb c? Could use hdmi like ps4.
I dont expect another breakout box.
It will connect to PS5 with a single cord to simplify setup and improve ease-of-use, while enabling a high-fidelity visual experience.
I can't imagine not wanting to keep a connection to the TV.
USB C seems like the next logical connection.
10 Gbps = 24 bits per pixel * 120 hz * x * y
Assuming that math is right, weird overhead would mean it's wrong, but something better than 1080p looks possible.
(And it looks like HDMI has a lot of overhead, so I don't know).
Another possibility is connecting to USB C and USB A on the front, and apparently USB C has a different operating mode. Instead of two lanes supporting 10 Gbps in opposite directions, it sounds like it can be used like a single 20 Gbps lane.
But I don't know if the PS5 supports that.
So it could range from barely being an upgrade to possibly being a great upgrade.
And someone more knowledgeable than me, should be able to say where it would likely end up.