Duo says that the estimated date that Greek will be out is 5/30/16. Well, it still says that and it's past that date. What's going on?
Great question. Keep in mind that the estimated completed is an estimation. A better way to see when the course will be released is looking at contributors updates. The most recent one, a month ago, said that they still had to begin audio recording. Two weeks ago, one of the contributors confirmed that recording still had not begun, and that the course would be released later. My guess is mid to the end of June.
You can follow future updates on the course here