Sony officially released new major firmware updates for the a1, a7S III, a7 IV, and a9 III. Firmware V2.00 for the a1, V3.00 for the a7S III, and V3.00 for the a7 IV, along with the imminent release of V2.00 for the a9 III after April. The firmware includes the implementation of content authenticity technology, upgraded remote control functions, and enhanced SDK support.