And the response I got today was....
Good day,
We acknowledge the Treasury Board Release dated June 20, 2012 regarding: Government Moves to Recognize Previous Military Service of Public Servants
Thank you for your enquiry. However, before we can move forward with the application of this entitlement, the Civilian Compensation Community still requires further confirmation from Treasury Board. This confirmation, which we expect in the nearest future, comes via a Compensation Directive and provides all aspects on the application of this entitlement. Also, within this Directive, it will contain the specifics on what exactly (what specific document{s}) will be required to provide proof of service with the Canadian Forces in order for you to benefit from this measure.
In the meantime, we ask for your patience and understanding in this regard and once Civilian Compensation Services has received this explicit information, we will then be able to fully respond to your enquiry.
If you have any further questions or concerns, please submit a new enquiry or if you do not have access to the DIN, we can also be reached by telephone at 613-971-0499 or toll free at 1-855-450-7669. Thank you and have a nice day!