For most users, icons are a boring addition to an OS that don't add any value, but to others, new icons are a way of life.
It's not a surprise that the new icons continue the flat and modern theme that we saw the last time we took a look at the changes in Windows 10. It's quite clear that Microsoft is still heading down the same path as build 9879, and that these icons are representative of the final direction Microsoft is taking the OS.
They look ok. Nothing special but not really tragic. I guess I'll have to see how they look like with everything else together. I mean windows icons rarely look that amazing but they work fine when you look at the theme as a whole