The folks at Kubuntu have remastered their 7.10 release LiveCD with KDE 4.0.
The Linux Newbie compares 11 different LiveCDs in this article. One interesting piece of information included is boot times for each of the LiveCDs.
The final version of Dapper Drake has been released, and with it comes new LiveCDs for Ubuntu, Kubuntu, and Xubuntu. They include GUI hard drive installers on the desktop, and have been named “Desktop” CDs to differentiate themselves from the text installers.