this report on Source Horsemen, but if not here it is again:
"We’re gearing up for another Power Lords release on Store Horsemen
right as we ring in the new year, and the pre-order for those will be
going up within the next week or two. Details coming soon here on Source Horsemen."
With no specific indication as to the when, the what, or the how much, we suggest you speculate wildly in anticipation of this whatever it is.