On our way to 2.4, we have the first maintenance for 2.3 ready. It comes with a bunch of bug fixes and improvements and we really recommend to update.
You can find the full changelog on the site as usual:
https://getkirby.com/changelog/kirby-2-3-1
The updated starterkit can be found on our download server:
https://download.getkirby.com
Of course you can use the CLI to update or get the submodules from Github: