It seems surprising how much change there seems if no algorithm change, but James has indicated that lots and lots of new sales data added.
From what testing I did, it seems that .com and .org that were worth much are now valued somewhat higher, but not universally.
.Com and .org that were unregistered or of low value before are now much lower. That means it has become more discriminating, which is good.
I only checked a selection of my .ca, but it seemed to me that most single word .ca are now higher valuations. Interested in what others observed.
Instead of >$25k for higher value, they now say that this valuable domain name cannot be automatically appraised.
Since the algorithm did not change, it still does not handle new gTLDs in a meaningful fashion that looks at the match across the dot.
-Bob