I've been digging around, trying to find out why 40nm? and why not any other node

As per the recent release :

This collaboration will see the development of an advanced model of the Company’s PET devices targeting a technology node of 40-nm, a significant production node of highly integrated systems-on-chip (SoC) silicon CMOS device.

The results of the physical devices at 40-nm developed at the “3rd party foundry” can then be correlated to the models of the PET technology developed using TCAD tools from Synopsys and vice-versa.

Mr. Peter Copetti, Executive Chairman Interim CEO concluded: “We now believe we have the right collaboration in place with Synopsys and our “3rd party foundry” to model our technology down to 40-nm and correlate our process to real physical device measurements.

This should provide us with results needed to showcase our technology to potential customers at the optimum node for our platform.

Why is 40 nm the optimun node?

To those more familiar with the foundry business, could it be related to manufacturing capabilities? I've red that shrinking from 65nm to 45nm costed billions.

Also, Globalfoundries just invested billions for Fab 8 in NY, which is designed for 28nm node and below, does it means (if they are the foundry partner) that GF will be able to produce 40nm-PET in that specific plant?