Yes, we have been mining with one S3 testing sample on our engineer's desk. But we have not been able to do a large mining farm with S3 yet. We have been using S2 machine to deploy a mining farm, and that is how we own the hash rate.
Hope that these words are genuine
I was actually hoping they were mining with s3s so that when they do ship the network hash rate doesnt go through the roof instead of just being reallocated this will equal less roi