is a new widget for displaying the strength or level or some quantity; you can see this used in the Power settings.
GtkIconView supports height-for-width layout.
GtkSpinButton can be oriented vertically. This is used in the new Clocks application.
is a new subclass of GtkEntry that is set up to be used as a search entry; this is widely used to ensure consistent behavior and appearance of search entries.
GtkEntry lets you set Pango attributes for the text (e.g. to make it big or bold).
is another new widget. It shows a button that brings up a menu. This widget is used for the 'gears' menu in several applications.
The theming code now supports multiple backgrounds and transitions. Limited support for CSS animations is available too.
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