2 weeks after DM i received an email from local CIC to arranged a date for interview then i booked myself for the interview the week after. I think it differs on the local office because from what i have read some received a mail, snail mail for the date if their interview, in my case the local CIC to for a date when i am available to appear for my landing so i just booked myself the earliest possible, (i received the email for interveiw friday and the next monday was holiday so i just book a date and time the week after). Just bring your old work permits, passport for stamping and picture for your PR card. Be there early so you have time to relax bcoz you will be so tensed that day
( excitement sometimes is stressful too ) it took 6 weeks to get the PR card. I dont have dependents. Goodluck!!!