Here is the video of the Black Knight made by BAE Systems. It’s an unmanned vehicle with a 30mm auto-cannon and a 7.62mm machine gun. It uses these four weird sensors to see it’s surroundings which remind me of googly eyes. This vehicle is being evaluated by the U.S. Army and may enter service.
The closest competition to this Black Knight is the Uran-9 which I find to be a better vehicle because its armed with four Ataka anti-tank guided missiles while the Black Knight does not. It’s possible for it to have ATGMs in the future. They both have similar auto-cannons (Uran 9’s auto-cannon is also a 30mm).