Awesome new Gnomon tutorial. Matte Painting Techniques for Concept Design. Check out the trailer, looks to be a great tutorial by Francesco..
"Matte Painting Techniques for Concept Design with Francesco Corvino http://www.thegnomonworkshop.com/store/product/1070/ In this lecture, Francesco Corvino shares his process for designing environments and his photo-real approach to Concept Design for the film industry. Starting from a rough sketch, Francesco models a 3D scene in Maya, extracting UVs and creating textures in Photoshop."