v7.0.0-beta.7

We'd like to offer a big thanks to the 11 contributors who made this release possible. Here are some highlights ✨:

• 🦥 The Lazy loading feature is now stable and the lazyLoading feature flag was removed from the experimentalFeatures prop.
• 🌍 Improve Japanese (ja-JP) locale for the Data Grid
• 🐞 Bugfixes
• 📚 Documentation improvements

Data Grid

Breaking changes

• The columnHeader--showColumnBorder class was replaced by columnHeader--withLeftBorder and columnHeader--withRightBorder.
• The columnHeadersInner, columnHeadersInner--scrollable, and columnHeaderDropZone classes were removed since the inner wrapper was removed in our effort to simplify the DOM structure and improve accessibility.
• The pinnedColumnHeaders, pinnedColumnHeaders--left, and pinnedColumnHeaders--right classes were removed along with the element they were applied to.
  The pinned column headers now use position: 'sticky' and are rendered in the same row element as the regular column headers.

@mui/[email protected]

• [DataGrid] Fix focus visible style on scrollbar (#12402) @oliviertassinari
• [DataGrid] Fix the issue where pressing the Delete key resets various cell values to an empty string. (#12216) @sooster910
• [DataGrid] Make rowCount part of the state (#12381) @MBilalShafi
• [DataGrid] Make column resizing and autosizing available in Community plan (#12420) @cherniavskii
• [DataGrid] Remove baseSwitch slot (#12439) @romgrk
• [l10n] Improve Japanese (ja-JP) locale (#12398) @makoto14

@mui/[email protected]

Same changes as in @mui/[email protected], plus:

• [DataGridPro] Add inputRef to the props passed to colDef.renderHeaderFilter (#12328) @vovarudomanenko
• [DataGridPro] Fix filler rendered for no reason when there are pinned columns (#12440) @cherniavskii
• [DataGridPro] Make lazy loading feature stable (#12421) @cherniavskii
• [DataGridPro] Render pinned and non-pinned column headers in one row (#12376) @cherniavskii

@mui/[email protected]

Same changes as in @mui/[email protected], plus:

• [DataGridPremium] Fix auto-scroll not working when selecting cell range (#12267) @cherniavskii

Date and Time Pickers

@mui/[email protected]

• [fields] Fix tabIndex on accessible field DOM structure (#12311) @flaviendelangle
• [fields] Fix items alignment on multi input range fields (#12312) @flaviendelangle
• [pickers] Improve the customization of the range picker calendar header (#11988) @flaviendelangle
• [pickers] Keep the existing time when looking for closest enabled date (#12377) @LukasTy

@mui/[email protected]

Same changes as in @mui/[email protected].

Charts

@mui/[email protected]

• [charts] Fix axis highlight when axis is reversed (#12407) @alexfauquette

Tree View

Breaking changes

The onNodeFocus callback has been renamed to onItemFocus for consistency:

 <SimpleTreeView
-  onNodeFocus={onNodeFocus}
+  onItemFocus={onItemFocus}
 />

@mui/[email protected]

• [TreeView] Clean the usage of the term "item" and "node" in API introduced during v7 (#12368) @noraleonte
• [TreeView] Introduce a new TreeItem2 component and a new useTreeItem2 hook (#11721) @flaviendelangle
• [TreeView] Rename onNodeFocus to onItemFocus (#12419) @noraleonte

Docs

• [docs] Add legacy bundle drop mention in migration pages (#12424) @LukasTy
• [docs] Add missing luxon Info import (#12427) @LukasTy
• [docs] Improve slots definitions for charts (#12408) @alexfauquette
• [docs] Polish What's new in MUI X blog titles (#12309) @oliviertassinari
• [docs] Replace rel="noreferrer" by rel="noopener" @oliviertassinari
• [docs] Update date-fns weekStarsOn overriding example (#12416) @LukasTy

Core

• [core] Fix CI (#12414) @flaviendelangle
• [core] Fix PR deploy link for Tree View doc pages (#12411) @flaviendelangle