Published at LXer:
This article shows the differences between KDE 4 and KDE 3, examines the new features, and gives clear instructions on how to get from 3 to 4. For parts 2 and 3 in this series click on Next Hidden Linux --> at the bottom right of the screen.
[I found this article when searching for info. on transitioning from KDE3 to KDE4 - Barbara]