We will be making the current experimental version (3.22) the new release version on or shortly after Nov 17, 2015. The versions will then be:
3.20 will be deprecated and you will be served an existing version.
If you are using a Maps API for Business client ID, you will be provided with the release version by default. If you are not using a client ID, you will be provided with the experimental release by default.
For more information about Maps API versioning, see:
To report issues with any version of the API, see: