CIT service change template

Purpose: Announce major changes that will be apparent to users of the affected CIT service.¹

This template is used for communicating with end users as well as technical support providers. Communications to the latter group should include technical details (or a URL)  if the change may affect interoperability of services they provide, or if the change requires them to assist users. 
^{1 Some CIT services have existing methods for communicating directly with the users of their services. Changes to those services are handled using those methods.}