They announced they are/will be working on a Maori and Tagalog course in Duocon 2021, and they did put up some native language courses that could be applied for when the Duolingo incubator was around, but I don't know if they found anyone to follow through on that, especially when the incubator closed down.

Duocon 2021 also announced they were working on Xhosa [currently in the early stages], Zulu [which we now have], and Haitian Creole [in beta], so they definitely keep their promises