If it is suitable for use in the industry, I can't wait to ditch ladder and Structured Text in favour of modern programming languages for industrial controllers.
The TL;DR is that the products have gone through all the testing required by EN61131-2 and you can safely deploy them in harsh environments (e.g. wrt electromagnetic radiation or vibrations/shocks). However there is no external certification.
As to availability, the hardware is manufactured and assembled in Denkendorf, Germany, so the supply chain is short. The Foundation guarantees availability of the Compute Module 1 and 3 until at least January 2023.
Hmmm. I'd be curious to know who ends up using these devices. Maybe I could apply to work for them. :)