Once your file is transferred to Sydney and you have completed medicals (not specifically in that order) the next stage is your background and security check. This can take 6 - 9 months. You will not hear from Immigration during this time as they are waiting for results from third parties which receive requests from everyone wanting to migrate to Canada. You may only hear from them if they request information from you such as "you didn't tell us about a trip to (country name here) it's not on your travel history form." "You didn't tell us you got kicked out or refused a visa of (country here)"
During this stage of the application if all going well your next email will be Passport Request and that will be once EVERYTHING is completed. Expect that closer to the 12 months since your application was received in Canada.
Good Luck!
Good stuff. Thank you.