This is an account that uses API calls to the PSN database to get information from it, mainly file sizes, but also release dates rarely (I know specifically among us's PS/Xbox release date was leaked by them with this method).
While September 30th is a Friday, because it is also the end of the third quarter of calendar year of 2022 (July 1st to September 30th), it is likely just a general placeholder for this quarterly target, if that.