Well, I guess this post is gonna keep popping up so I'll respond:
Chances are this won't be released, and if it is, it won't be any time soon. There's some annoying limitations with how it had to be handled because of how C2 works. And with C3 not yet supporting rendering plugins, and an already-announced runtime rewrite, it's not really worth the time or effort to push towards something that would be usable by others without my having to provide a lot of tech support, which I'm not interested in doing.
If you want to achieve the kind of effect I've created here, your best bet in terms of accomplishing it quickly and easily is to use Unity, which unlike Construct has lighting features that aren't terrible and are geared towards actual use in games right out of the box, as well as the required texture rendering features that in Construct depend on 3rd-party plugins, despite it being a very useful feature to accomplish all kinds of visual effects in just about every other popular game engine.