Panasonic announced a new DC-G100D camera in Japan with support for USB Type-C charging and a slightly updated EVF - those are the only two updates introduced with the new "D" version. Shipping will start on January 26, 2024. The new G100D model also means that there will not be another G100 Mark II camera anytime soon. Additional information:
Update: the new Panasonic DC-G100D will also be announced in the US.