The Show column in the Clocks pane list has been replaced by the Palette, Dock and Menu Bar columns, so that different clocks can now be displayed in the Clocks palette, in the Dock and in the menu bar.
Keyboard shortcuts have been introduced to speed up showing and hiding clocks. Control-clicking a checkbox in the Clocks pane list simultaneously shows or hides a clock in the Clocks palette, Dock and menu bar. Option-clicking a checkbox shows or hides all clocks in the Dock or menu bar (Dock and Menu Bar columns) and shows all clocks or hides the other clocks in the Clocks palette (Palette column).
The Clocks pane list can be configured by showing or hiding its columns. To configure the list, click the List Options button in the Clocks pane and select or deselect columns in the displayed dialog.
The Show Weather button has been introduced in the Clocks pane, so that you can quickly display the current weather in your clocks' cities.
While adding, editing or duplicating a time zone you can now automatically calculate its longitude from the UTC offset. To calculate a standard time zone's longitude, click the Standard Time Zone button. To calculate a daylight time zone's longitude, click the Daylight Time Zone button.
The Clocks palette now has a contextual menu that lets you quickly change the way the palette looks and behaves. To display the menu, Control-click the palette's background.
Display in the Clocks palette has been improved by reducing the height of text lines (the line height is now set to the current font's default line height).
The Advanced pane has been introduced in World Clock Deluxe Preferences. It lets you open World Clock Deluxe automatically at startup and hide the World Clock Deluxe icon in the Dock. When the icon in the Dock is hidden, World Clock Deluxe is a background-only application and has no menu bar: to open windows, view the Help, and quit the application, use the World Clock Deluxe status menu towards the right end of the menu bar.
The Default Clock pane in World Clock Deluxe Preferences lets you now specify where new clocks should appear: in the palette, Dock and/or menu bar.
Reports in the Weather Reports window can now quickly be collapsed or expanded all by Option-clicking a triangle in the list.
Cities, DST rules and time zones have been revised. Georgia's UTC offset has been changed (it recently switched back to + 3 h) and daylight-saving time information for some cities has been updated. Dubai, United Arab Emirates and three new time zones (Ulan Bator Summer Time (ULAST), Hovd Summer Time (HOVST), Uruguay Summer Time (UYST)) have been added.
A bug which could cause the Clocks pane list not to display alternating row background and tooltips has been fixed.
A bug which could cause label colors not to be updated in dialogs and in the Default Clock pane of World Clock Deluxe Preferences has been fixed.
The incompatibilities with macOS 10.4 Tiger have been solved.
Some other minor bugs have been fixed and some other minor improvements have been introduced.
Minimum required system version is now macOS 10.2.