The payload is a scientific satellite to be deployed from the ISS/MKC to study the magnetic field in the auroral zone.
Interesting: "This experiment provides a comprehensive study of physical processes in atmospheric lightning discharges. Delivery of the microsatellite in its working orbit at an altitude of 500 km will be done with a THC "Progress M-13M" after the completion of the flight of the truck in the station. According to the developers of the term of active existence of the spacecraft, "Chibis-M" will be at least one year."
It looks like they plan on raising the Progress after undocking, then deploying the satellite. This sounds like a new capability for Progress, and similar to what I've seen discussed for Dragon by SPaceX.
73, Drew KO4MA