Tom Grohmann Greetings!
I have checked internally and Yes, Fine tuning is currently not available for new customers as it is turned off for all regions. Unfortunately, we don't have any ETA at this moment when fine tuning opens again.
The models page will be updated as soon as we open up regions for fine tuning and users should be able to submit the requests when it is made available.
If you have previously fine-tuned & deployed in a region, then you can fine tune in that region if it's available.
Alternatively, you could use Azure OpenAI on your data feature with Open AI which might remove the need / requirement for fine tuning.
Hope this information helps.