I've just finished a new version of the C++ Corona API. This one adds the support for distributed rendering, easier instancing, displacement, ..., and is much easier to use in general. It will now be used for Cinema4D and Maya versions of Corona. If somebody wants to do an implementation in any other software, contact me. I am looking for talented programmers to connect Corona to other sofware in exchange for licence sale profit cut.
PS: Please note, that the API is incompatible with Blender (because it is C++ and closed-source).