There’s a Nintendo Switch Controller Update Available

Nintendo has recently released a software update not for the Switch itself but rather for the Joy-Con controllers. To update your Joy-Cons, visit System Settings and then head to the “Controllers and Sensors” tab. Then, click on “Update Controllers” and the Joy-Cons will be updated in just a few seconds! While it is currently unknown what the update adds, there is no doubt that Nintendo will reveal that information in the future.

Source: Nintendo Everthing