I also got my update and its interesting and overall correct. They assigned me Germans from Russia, which is not correct in theory, but understandable in practise, because I have many Russian German matches and they come from shared ancestry with those. Relatives of my ancestors moved to Russia.
They correctly identified Czech, but put it into Eastern Czech (should be rather Western) and its too low. Apparently the rest of this ancestry goes to "North Central Europe", which is basically the mixed Germano-Slavic zone from Eastern Germany and Poland down to North Western Czechia. I got a bit of Scandinavia, which is nonsense. Nearly all my German is Southern German, but there should have been some Western German too, that's missing.
I'd say, overall, its still the best estimate for myself from AncestryDNA so far.
For my father its good too, but he gets way too much British (10 %), but its still an improvement compared to the old version.
My mothers update is probably the worst, she got unnecessary new ancestries she doesn't have, like Balkan.
Both my mother and my wife got Slovakia - when in reality it should be Czech or Austrian/South German. I guess they had quite a bit of German and Czech in their Slovak reference. But I guess it can be hard to differentiate between Austrian, Czech and Slovakian at times, since people moved in various directions...
Looking at the chromosome browser, it is clear that the brush being way too coarse. Like there is no way I have almost whole chromosomes from say Denmark, that's just impossible. I might have small shared segments with Danes, from very far back in time, most of the time because of non-Danish ethnic people moving up there, but definitely not something that big. Too much smoothing still. My father gets a whole "Cornwall" chromosome, which is obvously not correct.
