Hi we got the same email! A bit bummed out about it but we did inquire about the processing time to the CIC. They responded back with this:
"Hello,
Thank you for your email.
Please provide the copy of the updated passport and proof that you have applied for the FBI certificate. We are aware of the long processing times for the FBI certificates and your application will not be negatively affected by it, as long as we have the proof that the certificate has been applied for.
Thank you for your continued interest in Canada.
Regards,
Case Processing Centre – Ottawa (CPC-O) – Family Reunification Unit – ST13757
Immigration, Refugees and Citizenship Canada
CPC-Ottawa, NHQ - Centralized Processing Region
CPC-CTD-Ottawa@cic.gc.ca"
Hopefully, it's true that it won't negatively affect our application and won't delay the process! We immediately got it done and sent them a copy of the documents.