Spanish filmmaker Jonathan Belles from Producciones451 is working on a new documentary that will be (hopefully) released during summer 2014: "Godzilla & Hiroshima: The Dawn of Kaiju Eiga"
The documentary will include interviews with critics, experts, historians, etc and will tell all about the link between the Kaiju Eiga as a genre and the Hiroshima/Nagasaki atomic bombs. Also, it will explore how the genre started and how audiences reacted to it during its birth.
There is a lot more to be revealed, so expect some surprises regarding this promising documentary
For the moment, to keep you informed, this is the official english website of the documentary: