FSW PR Application : Please advise - change of address, new child birth

Hi All,
Can someone please advise on following points:

I came to Canada on work permit in April 2009 and applied to CIC Sydney for PR in April 2010 in Federal worker category. I got 1st AOR in November 2010 to send all documents to Visa Office.
Meanwhile my address changed.
I sent complete application to Bufallo Visa office in January 2011 with new address.

1. So first question is do I send new address to CIC also?

Now I also got a newborn here in Canada.

2. Do I need to inform about this to Buffalo Visa office as well as CIC and how?

Note that I only have one file number received from CIC and not received anything from Buffalo Visa office. Though the online status with CIC file number says that my application is received at Visa office. Here are exact words:
"
We received your application for permanent residence on May 21, 2010.

We reviewed your application and sent you a letter on November 1, 2010. Please consider delays in mail delivery before contacting us.

Your application and supporting documents were received by the Buffalo office. They are pending review.
"

3. One last thing, what is approximate time frame in my case to finish the process?, the visa office shows 17 months. Is this counted from date application is sent to CIC or Visa office?

Thanks a lot,
Madhav