I am a Brampton applicant but I was following this thread closely.
I just received my Test invite after over a year of wait...
Just to let you know, I called CIC after the one year mark and they mentioned they would send an email to the Scarborough office.
I cannot be certain if that helped though.
Timeline:
App sent: Oct 11th, 2017
App received: Oct 13th. 2017
AOR: Nov 7, 2017
In process: Nov 23, 2017
Test Invite: Oct 24, 2018
Test Date: Nov 14, 2018 in Scarborough
Good luck to everyone still waiting!