https://wccftech.com/nintendo-switch-system-update-14-1-2-official-unofficial-release-notes/

Nintendo has deployed Nintendo Switch System Update 14.1.2 and we’ve got both the official and unofficial release notes.

Don’t expect much from this update as this new firmware version appears to be another minor one. Officially, Nintendo only mentions more stability improvements in the release notes for this system update, but as is common with these updates, there are also some under-the-hood changes.