Yes, we plan it, but I think it would work well only with high-end graphics cards.
In real-time maybe... but if you record the entire painting process as a script, you could paint a small image that's easier to process in real-time, then theoretically enlarge the canvas to any size, start the script, go do something else, and come back with a version that could be printed in very large sizes. Unless there's something I don't understand about the way this kind of thing works. This is what I'd like to be able to do anyway.
This could potentially be a complete game-changer for digital art in general, honestly. It would combine the magnification power of vector graphics with the complexity and naturalism of raster graphics. It would be like rendering low-poly characters on an old game console vs. ray-tracing an animated film.