I didnt know that, but today on Blendernation there is little a bit about it.
"Barnstorm VFX and Theory Studios (formerly Theory Animation) just shared the incredible VFX reel of the secons season of Amazon's "The Man in the High Castle". All modeling and rendering in Blender & Cycles - you've never seen Blender work like this before!
We're talking to both studios and will soon feature an in-depth look at this amazing production. If you have a question for them, be sure to leave it in the comments!"
And here is the link to the reel.