Yesterday I received what might just be my last letter from DUO. At least on the topic of inburgeringsverplicht (the civic integration requirement).
The letter says (roughly translated):
We (previously) sent you a letter. At the time we said that you had civic integration requirements. This letter informs you about the (current) status of your civic integration requirements.
You have received a complete exemption from your civic integration requirements.
Why have you received this exemption?
You have successfully obtained a Dutch language diploma. This diploma shows that you have done enough on your civic integration requirements. Therefore you are not required to do the civic integration examination.
Life in the Hague 
Woohoo! That’s awesome!!! 😀
Bedankt!! 🙂
Congratulations.
Thank you! 🙂