First one with windows 10 anniversary update

Got the update as well. For me it was like upgrade from 8 to 10 - same folders with old stuff created, same problems with deleting their content. Even though the programs were preserved I've lost a lot of settings, surprisingly in MS applications and Windows itself (nearly all customization is gone). All services & similar settings previously set up are now back to defaults. Definitely disappointment here - I was hoping the config will be preserved at least in its major part. Of course no warning was displayed on that.

One good thing though :) - sfc /scannow finds no corrupted files. For my Windows 8, 8.1 and TH2 it constantly identified corrupted files on the clean just-made install.

It looks all programs tied to the system configuration / state (e.g. Kaspersky Total Security, Process Lasso) need to be reactivated as the former activation settings are gone.

So far I can see only problems with applications not quite adjusted to use high dpi (I use 4K display) - surprisingly those that worked in last Win 10 build 1511, now malfunction - e.g. T-Clock Redux is only half-visible in tray.