Hello @akio tatako
Thanks for reaching out to us, I am sorry for your experience and I have seen your other 2 threads. There is a release note here: https://learn.microsoft.com/en-us/azure/cognitive-services/language-service/whats-new
Please follow the official document, we will post any change there to notify the change/ retirement you are looking for.
You should have received an email from us to the address you left to us in Azure portal. Please let me know if you have not.
Regards,
Yutong
-Please kindly accept the answer if you feel helpful to support the community, thanks a lot.