The Foundry have recently updated Mari to 1.4 including which includes some really great new features such as the import entire layered PSD files, support for OpenColorIO Based Linear Color, a new Tri-Planar Shader Module, as well as the addition of an Adjustment Layer Shader and an updated Enviroment Sphere Shader Module. Check out the huge 1.4 additions to Mari at the Foundry here.
