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From what I can gather, it's literally nothing more than a few changes in the plugin. Look at the bottom of, it gives a brief rundown of the new commands there.

For example: "3D models can be imported using the model() function. For example, model(filename.obj) will load filename.obj from the models folder." - this command only works in the Premium plugin (mv3d-plugin, not the demo one(mv3d-plugin-demo