XMPPConnection class defined four stream types, which one of them are you using?
In case “none”, then you would be using the default value, STREAM_TYPE_STANDARD.
The current roadmap for 3.2.0 involves removing other than STREAM_TYPE_STANDARD, unless there is a good reason to keep any other.
Once voting is done, final decision is made, and assuming that everything else is done for 3.2.0, it is released with the given change.