I just checked-out the "Iron Sky" website to keep myself updated on what's going-on with the film, and I was surprised to see that the site now includes a comic entitled "Bad Moon Rising". You can read the book online for free or, if you so choose, download the book and (get this) pay whatever you want for it. According to their site, all the money generated by purchasing the book will be used to help fund the movie. Apparently, there will be a total of three comics based on the movie.
Shooting for the film, now categorized as an "independent dark sci-fi comedy", finished in February of this year, taking place in Germany & Australia. The release date is scheduled for April 4, 2012, being released worldwide in theaters and via the internet.