This is impressive. The nerd in me wants to play with it right away, but the skeptic me just doesn't see that this will be mass produced anytime soon. Hopefully I'm wrong.
"Play" sounds about right. I've enjoyed the exponential multiplier in prototyping+design speed I've gained as each new block was made.
"Mass produced" -- no mass-production plans yet, however... will be ordering and assembling at least a small-batch of boards for early-testers/adopters. Stay tuned through the website if you want to get on the list, depending on your use-case and experimental willingness.