I was looking at a screenshot of KDE 4.1 which was released today, and noticed 2 things, one bad and one nice.
The bad one, the font rendering looks very bad (spacing between letters is often wrong, see "Favorites" for example). KDE is probably not faulty but they could have chosen a font working fine for the screenshot...
Then the good one, they changed the clock font (maybe it was already in KDE 4.0 I did not check). This is no longer the ugly segment display \o/
Update: Official announcment screenshot looks better and does not have the font issue.