They say it's first operational system in it's class, but it seems very similar to the Australian Apollo system, with Apollo being able to go up to 150kW
https://eos-aus.com/defence/high-energy-laser-weapon/apollo/
https://eos-aus.com/defence/high-energy-laser-weapon/apollo/
I think the major difference here is that the Iron Beam is operational, as in finished trials, delivered to an armed force and actually was in active use in the previous war for more than a year