https://techcrunch.com/2019/10/03/sonys-new-a9-ii-mirrorless-full-frame-camera-has-the-speed-sports-photographers-need/

Sony announced a successor to its popular A9 mirrorless interchangeable lens full-frame camera today. The A9 II carries over some of the specs and stats of its predecessor, like the 24.2 megapixel stacked imaging sensor, but adds an upgraded BIONZ X image processor, which powers the much more powerful autofocus capabilities in the new camera.

Sony debuted a number of improved AF features on its A6400 APS-C camera earlier this year, and its brought those and more to the A7R IV it launched at the beginning of September, and on this new iteration of the A9. There’s real-time eye autofocus for both people and animals, with right and left eye selection for animals, along with real-time eye AF during movie shooting, and the company’s real-time object tracking, which basically sticks your focus point to whatever you want to point it at remarkably well, based on my experience with it in other modern Sony cameras.