Thanks Paul, I was sure when I made the question I had seen it and genuinely surprised when I could not find it.
"I'm happy to say the card design was updated recently" What issues did that address?
We have used the Teensy 3.2 and lately 4.0 a lot on our prototyping projects. Truly thank you for making such boards available and I am happy to find good support and friendly community at the forum too.
We are now looking in to use Teensy 4.1 on some Ethernet and USB Host projects.