Quipper: A Scalable High Level Functional Language for Quantum Computing (mathstat.dal.ca)

Not yet. But it's definitely preferable to have the software architecture figured out before we have commercial quantum computers in need of it.

See Krysta Svore at Microsoft Research's QuArC for a good presentation on the topic. (Also read her paper on quantum deep learning from 2014 just because it is so very cool.)