This week starts with a new Corona Renderer Alpha – v7. After just 3 months of development, this version adds support for 3ds max 2015, Shadow Catcher material for compositing, new proxy format, improved viewport display, Particle Flow, and more. While this version being still free, Corona is aiming at a commercial release for 3ds max later this year, with a full set of features for architectural visualization. There are also plugins for Maya and Cinema 4D in development, and an exporter for Blender.
Corona Renderer runs entirely on CPU, currently requires 3ds max 2011-2015 to run, and can be downloaded here. It also comes with a sample interior scene with Corona set up. Go ahead and read the full release notes on the Corona Renderer blog.