Hi,
CentOS: RedHat support will likely come in near future, but be limited to version 8 and beyond. You can put the SDK inside a Docker
container if you wish to use on CentOS now.we have forwarded this feedback to our product team. You can also raise a user voice request here so
the community can vote and provide their feedback, the product team then checks this feedback and implements the feature in future releases.
Please follow below link for release notes from the speech SDK and the January release of the Azure cognitive service Speech SDK v1.9.0.
https://docs.microsoft.com/en-us/azure/cognitive-services/speech-service/releasenotes
https://docs.microsoft.com/en-us/azure/cognitive-services/speech-service/
Thanks