Hoi,The language policy has it that any eligible language may be enabled for Wikidata. Several of the languages in the Incubator are functional in Wikidata already others are not.
This list shows all the requested languages and it shows an indicator when the language can be used on Wikidata (only for eligible languages).
Please have a look and let me know when you have any comments. The idea is that we will ask in a week for languages that are eligible to be enabled.
Thanks,
GerardM