No, I doubt it is just a redo, but likely includes first set of surface drilling for "the pit" and I am guessing also the 20,000 meter drill program announced before the surface refocus was announced (if not more - sort of lost track - ByW used to do such a good job keeping us clear on this stuff via Gary)
It is not just a lowering of the cut-off (for underground) but a big lowering for whatever part might have been reclassed to pit that had been includable in prior and also a major move of underground from inferred to indicated. How much of that reclass for underground is due to new drill results and how much the model change is not determinable from info provided.
jmo
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