NinjaPirate - From the sounds of it you've gotten final approval. First stage approval is AIP and they do not transfer your file to the local office after that. They only transfer applications if they question something in your application or when you've been approved and have your landing interview. Since this was an approval letter stating the transfer of your application, you are waiting for your landing interview. The website does not provide estimates for landing interviews (as other suggested) those are first stage approval (AIP) estimates for applications processed at Vegreville.
The time it takes to get your landing interview depends on your local office. I had a small one, Saskatoon, so it took us a week from decision made to landing interview. Based on others landing at Scarborough (on another site), it takes about a month, to get your landing interview. The wait sucks, but take solace in the fact that the hard part is over. Now its just a matter of getting the date, answering a couple yes/no questions (have you committed a crime, etc) and signing a couple papers, to make it official.