What is your process about notifying customers about upcoming changes in APIs?
The current version is 2.6. If changes are made new WSDL's are made available. The old WSDL's are still valid. You can see what is current here https://apiforums.easylink.com/emapidocs/
Thatv link is in the upper right hand corner of the forum.
We don't generally annouce new versions.