Finally.

The new Substance is here. Works really well.
Allegorithmic rewrote the whole plug-in. (Bug fixing, new features, all new code in the background.)

The color management problems are still there if you want to render with mental ray.
I just fix it. 🙂

The new PBR workflow is really great (no color management problems).

You can download the plug-in here:
https://forum.allegorithmic.com/index.php?topic=7075.0

And my color management fix from here (reply #7):
https://forum.allegorithmic.com/index.php?topic=7276.0

Cheers,
D