No, it should start sometime later this month. This was approved on Sept 25th and the effective date is Oct 19, 2023. Right now the PTIN renewal page says it is still processing for 2023 new apps and renewals.
I got this info from the National Archives Daily Journal of the Federal Register here: https://www.federalregister.gov/documents/2023/10/04/2023-22103/preparer-tax-identification-number-ptin-user-fee-update