With the exception of critical security issues/bugs, Canonical will be skipping over shipping stable release updates for the Linux kernel in Ubuntu until early October.

From email announcement

Please be informed that we will be skipping the SRU cycle 2024.09.02 due to a critical infrastructure change. This adjustment will allow us to focus on ensuring a smooth and stable transition. Our next SRU cycle will start when the infrastructure is back online. The current estimation is at the beginning of October. Once we know more details, we will let you know the exact date.