Learn more about the Image Layers extension and the Advanced Array Modifier, and about the guy about all this, Fabio Russo, in this interview by BlenderDiplom.
Gottfried Hofmann writes:
BlenderDiplom talks to Fabio Russo who currently is developing layer-based editing for the blender image- and texture-editor. He is also working on advanced features for the array modifier. Find out about the person behind those projects and his experiences with crowdfunding.