This week, Nintendo released a very small and minor update for the Switch, version 10.0.1 and it only includes some minor improvements to the OS, which means some small bug fixes.

Version 10.0.0 was a much larger release, it came out a few weeks ago and you could move software between the onboard memory to an SD card if needed and also buttons could be remapped.

Release notes

General system stability improvements to enhance the user’s experience

To update your Nintendo Switch, it can be done in the Settings section, but most consoles will update automatically.

Source: Nintendo