This is a later version available for NDA customers at : Intel® Quark™ Microcontroller D2000: Documentation
The final version is still WIP though and should be available shortly.
We have NDA but get the following (image attached) when we click on that datasheet. We have applied for privileged access a few times through that link.
Also, that datasheet is dated Jul 2015 but the one we already have says "November 2015" on the front page.
Anyway, we can wait for the final datasheet. If at any stage there is a security manual, please let us know.