The Qt Design Studio 4.0.0 release contains bug fixes and new features.

The most important changes are listed in this document.
For a complete lists of changes, see release reports for Qt Design Studio
4.0.0: https://bugreports.qt.io/projects/QDS/versions/20611

General
  * Added new top toolbar (QDS-3817)
  * Hid sidebar by default
  * Fixed that macOS dmg is notarized (QDS-8500)

Content Library
  * Added that textures and environment maps are downloaded (QDS-8470)

Material Browser
  * Added "Add light probe" option (QDS-8472)
  * Enabled keyboard navigation in the Material Browser (QDS-8764)
  * Fixed not being able to remove the last material of a model (QDS-8119)

Navigator View
  * Added texture drag-and-drop support to Navigator (QDS-8206)
  * Added bundle texture drag-and-drop support to Navigator (QDS-8338)

Material Editor
  * Added bundle texture drag-and-drop support to Material Editor (QDS-8340)

Assets View
  * Added "Show in explorer" option to assets context menu (QDS-9061)

User Experience
  * Changed context menu structure and design (QDS-8970)
  * Added new status-bar (QDS-8508)
  * Updated color theme and icons (QDS-8383)
  * Updated design of all tool-bars (QDS-8967)
  * Removed unrelated options in preferences
  * Added kit selection to status-bar (QDS-8970)

Code View
  * Fixed copy and paste (QDS-8847)

Qt Bridge Figma
  * Added Auto-Layouts support (QDS-8210)
  * Improved export of Components and Component Sets (QDS-8610)
  * Added UI element to assign custom QML Snippets to items (QDS-8689)
  * Improved archive generation progress cues (QDS-8781)
  * Improved cues on item rasterization reason (QDS-9111)
  * Fixed export of fills property for fills with multiple solid colors (QDS-8898)
  * Fixed too verbose export messages on export of removed Component (QDS-8991)
  * Fixed export of opacity property (QDS-9036)
  * Fixed inconsistent uuids in Arrow nodes (QDS-9058)
  * Fixed export of items with deactivated effects (QDS-9095)

Qt Bridge Importer
  * Added optimization to create QML components only when the metadata source is different (QDS-8763)

Property View
  * Fixed that exported color property as alias is not listed (QDS-8856)

Documentation
  * Added tooltips to property editor (QDS-8034)

Examples
  * Added Material Library example to welcome page

Qt for MCU
  * Updated MCU project template with new structure (QDS-4729)

