a) Version 5.2 adds 23 new images for several factions and mostly new Chaos units and an Artefact from the Treasure Chest The chaos units/artefacts can be used by any faction so indeed over 130 new blocks have been added.
b) fixed errors with Sword B3 being identified as Sword B4
c) Separated ‘Were’ creatures as a separate tab from Chaos units.
This Wizard Kings module has been updated using VASSAL 3.6.3 but may still work with earlier versions.