Edited - found the answer below
For those of you who have had notice of your Oath Ceremony, is this notice sent to you from USCIS and does it appear in your account documents? or does some other state related entity email / send a letter to you for the Oath ceremony?
"USCIS will notify you by mail of the time and date of your ceremony. The notice USCIS sends you is called the “Notice of Naturalization Oath Ceremony” (Form N-445)." https://www.uscis.gov/sites/default/files/document/guides/chapter5.pdf