Hello Vincent,
Welcome to the Microsoft Q&A and thank you for posting your questions here.
I understand that you much concerned about "bring your own data" (BYOD) support on Azure OpenAI Services.
Regarding your questions:
When can we expect BYOD to support structured outputs? Is this feature planned or in active development?
The feature is not supported currently, and there is no specific timeline available for when "bring your own data" (BYOD) will support structured outputs. https://openai.com/index/introducing-structured-outputs-in-the-api
Is "bring your own data" going to support structured outputs in the future?
Since there is no confirmed plan or timeline, keeping an eye on updates from Azure OpenAI Service would be advisable.
I hope this is helpful! Do not hesitate to let me know if you have any other questions.
Please don't forget to close up the thread here by upvoting and accept it as an answer if it is helpful.