Anyone using Debian 12 or Debian 11 should update their systems now to bring themselves to the latest point releases - Debian 12.2 and Debian 11.8 - without doing a full upgrade, just install all available updates. The main purpose of Point releases is to create images that contain all the latest updates, which can help you save time installing new Debian releases.
It should be pointed out that these point versions do not make major changes to Debian, they are just for the convenience of users installing Debian. If you have old Debian installation media, such as Debian12.
Debian12.2 updated software packages include Caliber, ClamAV, Electrum, Linux kernel, MariaDB, OpenSSL, etc.
You can find the complete list of Debian 12.2 and Debian 11.8 here.
Debian 12 and 11 will be released on June 10, 2023 and August 14, 2021 respectively. Both versions will be supported for five years, including long-term support.
Unless there are special reasons (such as some software dependencies) to use Debian11, it is better to use Debian12. Unlike Ubuntu based on DebianUnstable, the stable version of Debian has been rigorously tested, so it will have a better user experience.
One of the biggest drawbacks to using such extensively tested software is that Debian tends to ship with a slightly older kernel. If you're using older hardware, everything will be fine, but if you just bought a brand new graphics card, you may want to use an operating system with a newer kernel. The kernel of Debian11 is Linux5.10, while the kernel of Debian12 is Linux6.1.