What is the current teaching on the way disfellowshipped people are to be treated by Jehovah's Witnesses?

I recently met in the street a JW who I like to talk to and he told me that the teaching on the treatment of those who have been disfellowshipped has changed. They are now not so ostracised as they once were; at least that is my current understanding. So my questions are: 1. What change has been made? 2. When was the change made? 3. What was the previous teaching? 4. What is the current teaching? 5. Is there any practical reason or current situation which anyone thinks has precipitated the change? Thanks