"The inclusion of three batteries means DJI is placing extra focus on extended recording sessions"
DJI has always included three batteries in their combo kit. In fact, bizarrely, this is true for their drones as well. The base kit comes with one battery and is charged in the device (camera/drone). The combo/flymore kit comes with three batteries and charge hub.
A new leak of the DJI Osmo Action 5 Pro combo kit reveals accessories like three batteries, a charging hub, and mounts. Additionally, the camera supports 960fps super slow-motion using 4x frame interpolation for high-speed shots. Expected to launch on September 12, the combo kit may be priced around €479.