I've attached a copy of the hardware reference manual, which has pinouts and stuff, and I don't think was ever subject to an NDA. (I do also have a copy of the schematic, but it's subject to an NDA.)
We used these on a work project a while back, and they were mostly fine. The connectors are somewhat fragile though, and I think our most used ones failed after only like 20 mate/unmate cycles. The samtec QSH connectors are technically rated to 100 cycles, but I think that's really only under fairly ideal conditions.
I think Pico computing got bought my Micron, and it looks like the E-102 is completely discontinued/I can't even find the product page anymore. But it might be worth trying to email them for more information. Back in the day this was one of the few boards in its form factor with a Zynq and most components rated over the aerospace temperature range (I think everything except the micro-SD card connector).