Nintendo has pushed system update 21.0.0 to Switch family hardware, delivering two focused changes: an improved screen display when using the Adjust Screen Size feature, and updates to the Notifications system, according to Nintendo's official support documentation.

The Adjust Screen Size change addresses a persistent friction point for users calibrating their display output — particularly relevant for those running the Switch docked on monitors or televisions that don't auto-detect overscan boundaries cleanly. The updated display during adjustment gives users clearer visual feedback while moving the boundary sliders, reducing the guesswork that made precise calibration tedious on earlier firmware.

The Notifications update is the less-specified of the two changes. Nintendo's patch notes describe it simply as "updates to Notifications" without elaborating on scope. Whether this touches delivery logic, UI presentation, or backend infrastructure for the notification pipeline is not detailed in the release notes. For most users the impact will likely be subtle — but for developers building applications or services that surface push notifications to Switch users, it's worth watching whether any behavioral changes emerge post-update.

Both changes fit Nintendo's established cadence of incremental firmware maintenance rather than headline feature drops. The Switch platform, now well into its ninth year on the market, has been receiving steady system software updates that collectively smooth edges rather than introduce new capability pillars. Updates like these rarely dominate conversation, but they compound: the Switch's firmware has evolved considerably from its 2017 launch build, accumulating features like wireless Bluetooth audio support, expanded cloud save access, and local wireless improvements across dozens of point releases.

The 21.0.0 update applies across the Switch family — original Switch hardware, the Switch Lite, and the Switch OLED model. Users on automatic update settings will receive it without manual intervention; those on manual update configurations can pull it through System Settings.

There is no mention of stability or performance changes in the documented release notes, and no new software features beyond the two cited items. That restraint in scope is consistent with how Nintendo has handled minor system updates throughout the console's lifecycle — targeted, clearly scoped, and light on risk of regression for a platform that still carries an active player base ahead of the Nintendo Switch 2 launch.