How funny, I was basically coming here to ask a similar question. Mid-winter here in the northern hemisphere, and I was thinking about next summer's grow and how I have to do light dep, and I'd love to automate it.
So far I'm picturing a large folding awning, something that can "accordion" open and closed, and I was imagining rigging something like a automatic garage door opener to open and close it, somehow connecting the switch to a timer... but yeah, that's as far as I've gotten on that one. As a side note I don't mind planting late and keep the plants smaller, so I'm not seeing this scaled for 10' plants, more like 5' tall plants.
But to answer your question -- no, haven't seen anything other than very expensive greenhouses with automated shades.