Existing cameras include the E50, the E90, and the H520 version of the CGO-ET.
We hope to see an improved thermal camera soon, in FCC tests it is called the E10T. A zoom camera is said to be also in the works, the E30.
In actual use, the H520 is proving to be a dependable and stable performer, with GPS resolution unmatched except in much higher priced drones. Commercial and Public Service operators are finding that this craft fits their need for capability and affordability. These additional cameras will add to its versatility.
UPDATE: The E10T Thermal cameras (2 of them!) have a data sheet now.