If you own the Sony a9, it’s time to head over to the Sony website and download some new firmware. The long-awaited Firmware Version 6.0 has finally been released, adding Eye AF, an Interval Timer, and more to the high-speed Sony sports shooter. Firmware version 6.0 was first teased back in January when Sony revealed the a6400, and these same functions first made it to the a7 III and a7R III in April. Finally, after adding AI AF and some…