The widget name can be updated either in the style inspector or in the widget inspector. If changed, the name will automatically be updated in the project.
Widget Cell Names
If a name of a widget cell is changed, a circle appears behind the name in the screen inspector. The name can now be reverted to the original name or updated and applied to the widget and all used widget instances.
The updates can also be stored in the shared library and made available in all other projects.