We are very excited about being officially in General Availability with Cognite Functions! 
A big thank you to everyone who helped in this journey and your tremendous contribution! Please keep posting feedback and issues, as we are constantly improving the service.

As part of GA, there are a few things that you should consider:

• We have support in the official SDK (cognite-sdk version 3.9.0) and have moved to V1 API endpoint. We recommend you to use only the official Python SDK when creating new functions and migrate the old functions that point to the experimental one. We will remove Functions from the cognite-sdk-experimental starting version 0.94.0. You will still be able to use the experimental SDK with versions < 0.94.0 until we remove the playground API (because the experimental SDK uses the playground URL) by November 1st.
• Functions in API playground is retired at 1st of November.

Check out here more details about the release: