If it’s truly a solid-state battery, thermal management is less of an issue since they won’t be limited to the usual -10 - 60 °C range which makes it easier to dissipate heat into the environment.

What makes me suspicious is that they claimed that the battery can operate at/above 100 °C safely without degradation, but in the 11C charging test they paused it because the temperature had reached 90 °C.