Most of our bots are in the Dutch language, so it is good to know, that as of june 21, Dutch is out of beta in the IBM Watson Assistant, see documentation website where it is stated as below
21 June 2018
- Language updates for system entities: Dutch and Simplified Chinese language support are now generally available. Dutch language support includes fuzzy matching for misspellings. Traditional Chinese language support includes the availability of system entities in beta release. See Supported languages for details.