When we are finished doing it. It will be announced here when it's ready. We don't have an exact release date, but should be around the end of the year.
We just released a big free update for KORD, which was long overdue (much longer than Zurich), but that should be enough proof that we finally deliver what we promise, unfortunately, no software gets ever released *precisely* on time, which is why it's best to give just a general idea of the timeframe, rather than exact dates.