"The Plasma components that provide the core elements of the
desktop environment are where you will find the most welcome and
noticeable improvements. The panel system is shaping up nicely and
has a few new capabilities that I particularly like. My favorite is
the progress notification feature. When you initiate a file
operation of any kind, the progress will be displayed in a
notification bubble that pops up out of the panel.
"It will stack progress bars for multiple operations and let you
control them individually. This is really useful because it
eliminates the need to have progress dialogs appear when moving or
copying files with Dolphin, KDE's file manager. It appears to be
tapping into KIO, the KDE filesystem abstraction layer, and seems
to show any KIO-based file operation, not just ones that are
performed with Dolphin."