Releases go live on the release date and approximately at 12AM in each and every territory that Spotify is in. So, if you are in Australia and it is 12AM of the release date, you will see the release before Canada as they will show it live when it reaches 12AM on the release date of the release and so on, territory by territory.
If you release doesn't show at 12AM, you may have to close the program entirely then re-open it. If your release still doesn't show it may not be live for any other reason so feel free to create a ticket.
Note: Your release will not show if you have a pre-order release date because Spotify is a streaming provider.