A tab with unsaved annotation changes shows a red dot after its title. This replaces the “You have unsaved annotations” message in the toolbar.
Menu bar with tabs in the title bar
When tabs are in the title bar, the menu bar can now be shown as a compact bar (File, View, …) under the tabs. Before, showing the menu turned off tabs in the title bar.
Properties window sizes to fit
The Document Properties window sizes itself to its content. Font info loads in the background, so the window opens faster.