Hopefully by now you have seen the new release of 3ds Max. For a overview of the new features, check out the help here. The Autodesk AREA site has also bee revamped, to be more community oriented. Check it out: area.autodesk.com. Some features I think is cool include the gltf format support, and include MAXScript capabilities. A subtle feature is that now the 3ds Max physical material is compatible with the Autodesk standard surface. This makes exchanging materials between 3ds Max and Maya easier, but also extends to other tools, including the Forge Viewer.
For SDK changes, check out the help here. Highlights include Instance Display API, Instance Rendering API, and Volume Display API. Another aspect improved is the Plugin Packages.