Make sure you update your new LOA from your College / University via webform so they take it into consideration when they issue your Visa and your Letter of Introduction!
The thing is, my university said that my LOA is for Fall 2022 / Winter 2023, which means that I can start my program in any of these two semesters without even informing them. That is, there is no official deferral to Winter 2023. So, I do not think the university can issue me a new LOA. At the same time, I wonder if it means that I still have an option to request an official deferral for Fall 2023 (in case we get a refusal and the re-application takes much time). If that is not the case, it would make the things more complicated as I would have to go through the admission process all over again without any guarantees.