When will duolingo Polish be out
No one knows. The date given here https://incubator.duolingo.com/courses/pl/en/status is apparently generated by computer and it changes every day.
I don't know, but I'm guessing things like mitStrudel mentioned, plus proofreading etc, also this weekend was Thanksgiving in the US so I imagine Duolingo staff aren't working, and they're the ones who actually have to flip the switch to make the course live.
I'm hopeful it may come out tomorrow, but until such time as either 1) someone on Team Polish makes an announcement or 2) the course appears, it's all pure speculation.
it's all pure speculation
Yep. I haven't a clue, really. But if it were to come out on Saturday, then it could be all pure spekulaas (is that a thing in Poland?). xD
My coat is fetching me. ;)