As Nintendo said, the Switch has been updated to Version 9.0.0 tonight. You can get a full rundown of the update below.
Added a search feature for the News Channel.
Channels can be searched using filters or free text.

Added "Display QR Code to Check In" to User Settings.
You can display a QR Code on-screen to check in using your Nintendo Account.
Alarm Notifications have been added to System Settings > Notifications.
You can check or delete pre-set alarms.
Alarms can be set up only within supported software (to be added at a later time).
Controllers firmware update may be required to use this

You can now configure touch screen sensitivity settings.
Select between Standard and Stylus sensitivity (optimized for stylus input). Added the option to turn on/off the system button input (Nintendo Switch Lite only).
When this setting is turned off the system no longer receives input from the console buttons, with the exception of the Capture and HOME Buttons, and can only be operated from a wirelessly paired controller (sold separately).
This setting is on by default and can only be turned off if a compatible controller (sold separately) is wirelessly paired to the console.
The setting will automatically turn back on when the console is restarted or after returning from sleep mode.

Added "Online Play Invites" section to the User's page.
Invests from friends to join online play in supported software will be displayed in this section.

General system stability...