OpenLR by TomTom

I just read about OpenLR by TomTom. How open is it? Any change we can, in the future, have like an overlay to help mapping, or even the possibility to import its data? I know that this is not a really a necessary feature for some countries, but for example in Portugal it could be very helpful, since almost only the major cities are mapped, and even those have a lot work to be done…