Anyways..... I am pretty sure we knew the patterns or property value changes within the county literally a year ago if not before. See here from January: Anger, Angst, Assessment.
and again, for those Allegheny County public officials (including school districts, municipalities, and the county itself) looking for advice on setting revenue-neutral tax rates. I refer you to Professor Strauss' calculations, or at the very least his methodology. I am sure someone will at some point go back and compare what tax rates are finally set to this type of benchmark. His data, that has also been up there some time, is also a big data point that there is nothing new in any of this.