2D is dead long live 2D pop-up-book-o-vision. Panasonic have announced in Japan that they’re developing a pancake proportioned 3D lens for the Micro 4/3rds system, which will be compatible with existing cameras like the GH1 with a firmware update. Presumably the GH2 will be compatible out of the box. Tokyo based Akihabara News was at the press conference and have more images of a frankly laughable prototype, which has the…