Inkscape 0.92+devel (4a54307201, 2017-07-16)
dpiAware setting has no influence on appearance (probably overriden by gtk3?).
Fonts and icons scale properly.
The canvas does *not* use the native resolution!
(See also 0.92.x at https://inkscape.org/en/~eduard.braun/%E2%98%85inkscape_092x_dpiawarenon-dpiaware_200png)
The canvas is a bit blurry... Hope that can be solved. Thanks for working on this and testing it, there are lots of user questions around hidpi screens, and we always promise them it will be better in 0.93 in reply (and pray that it actually will).
See also https://bugs.launchpad.net/inkscape/+bug/1285887