There is another new form component, Split, that allows users to define a flex-based column layout without fixed grid widths.

https://filamentphp.com/docs/3.x/forms/layout/split

There is a new infolist entry: KeyValueEntry, that allows you to output a key-value table of data, similar to the KeyValue form component.

https://filamentphp.com/docs/3.x/infolists/entries/key-value

When using a TextInput for a password, you can now make it revealable, which allows the user to click a button to see the password in plain text.

https://filamentphp.com/docs/3.x/forms/fields/text-input#revealable-password-inputs

Table columns can now be grouped together with a common header, which is displayed above the existing headers.

https://filamentphp.com/docs/3.x/tables/columns/getting-started#grouping-columns

Table filters can now be deferred, allowing the user to click an “apply” button before they affect the table results. This is useful for heavy queries to improve performance while the user is trying to use the table.

https://filamentphp.com/docs/3.x/tables/filters/getting-started#deferring-filters

Clusters are a new way to structure large panels, that build on top of the sub-navigation UI introduced in v3.1. They group together multiple resources and pages, allowing you to easily set up a common sub-navigation sidebar, breadcrumbs, and URL prefix. The result? Less items in your main navigation, and some hierarchy for your codebase and UI.

https://filamentphp.com/docs/3.x/panels/clusters

There is a new action to accompany ImportAction from v3.1: ExportAction. This allows users to choose which columns to export, optionally rename them, and then download their data to CSV or XLSX format.

https://filamentphp.com/docs/3.x/actions/prebuilt-actions/export