With 2009 version of production line up Autodesk has released 3ds Max in 2 different flavors. One is for the media and entertainment industry (3ds Max) and the other is for Architectural and visualization industry (3dsm max Design). While both the versions are complete packages there is a subtle difference in both the products. The 3ds Max version has the SDK to build custom plugins and renderers kind of add ons to the product, the 3ds Max Design has got the lighting analysis tool. Except this there is no other difference in the products as per Autodesk. I think previously know Viz is dis continued in the favour of 3dsMax Design and good to know that both the products have got everything unlike Viz which was always missing some parts of 3ds MAX.