I got an email saying I have 30 days from the date on the letter to submit their passports to the passport office that they had assigned for me.
The processing of your application for permanent residence in Canada is almost complete. You must complete the following steps within 30 days in order for our office to issue your Confirmation of Permanent Residence and, if applicable, your permanent residence visa.
And also the steps to prep the documents, like sending two photos with the given requirements, letting them know if their status has chanegd , proof that we paid Right of Permanent Residence Fee (RPRF), height and eye color and that everything should go in one package.
That's about it basically