Are there more heads hidden within Bloody Harvest?

Okay, before the dlc I was (like most people) sitting on 23 / 24 heads for my character, with the Nog being the one we’re all missing. I’d checked out the 2 new heads from the dlc in the quick change after playing bloody harvest for a while but I’ve noticed the quantity leapt not up by the 2 added (skull and domes / tuned and doomed), but 4, so I’m now on 25/28.

So has anyone found the other 2 heads at all ? Or is it just making room for future dlc ?

i think they set the base for the Maliwan takedown too with that patch…
maybe it’s the code of the game reading that it “has” 2 more heads but of course the drop rate is 0%