National Lab (LBNL) results support LK-99 as a room-temperature ambient-pressure superconductor

The thing is, it's "only" a simulation, and with DFT stuff (the approach used in the simulation) there is usually quite a bit of wiggle room to get some interesting results. It's still kind of a big deal, it says something like "hey these people's results might not be complete nonsense", but I'm still waiting for someone reproducing something experimentally.