Here are my timelines
Category........: FAM
Visa Office......: Ottawa/New Delhi
App. Filed.......: Feb 2011
Doc's Request.: July 2014
AOR Received.: Dec 2014
Sponsorship approval, File Transfer (Ottawa) & Medical Request...: Oct 2015
Additional Med's Request: Dec 2015
Passport Request...: Apr 2016
My parents were here on visit last year, and had to do medicals for visit. My Dad had to redo the medical for PR visa, but they accepted the medicals for my mom. My mom medical is expiring May 24th, and that is why they need to land before that date.
Today my parents have submitted passport to VFS, Mumbai, and they were told that they should get back their passports within 10-15 days.
Good luck to everyone still waiting for your visa approval.
Thanks
Chetan