In the new version:
- The panel can be painted in the color of the active window.
- With transparency turned on, the contrast with the background is enhanced.
- New styles of open window indicators: DaskToPanel, Unity. Styles can be obtained from store.kde.org.
- Panels in different Rooms can work not only separately, but also synchronized.
- A complete redesign of the panel settings, the window adjusts to the screen resolution.
- The appearance of badges (indicators on top of icons) has been significantly improved.
- 3D styles are available for notification icons.
- A number of bug fixes and performance improvements.
Source: linux.org.ru