To all the grieving families, don't get your hopes up.

The commission needs it's summer holiday. When they return in the fall they will need to address urgent issues that arose over their summer holiday then recess for Christmas. Spring will result in another broken promise as summer is looming. Fall 2018 will require more time to address urgent summer 2018 matters and with the retirement of one commission member they will require more time to bring in a new member. 
Finally they will concede that with a looming election an inquiry will have to wait as they want to ensure they are able to implement the recommendation(s) after the election but the promise of an inquiry will be a key platform for the next election.