According to Slashdot, Yellow Dog Linux v4.0 is final. For what it's worth (and it isn't worth much!), YDL was the only Linux distro for PPC that I could get to load properly. It's a quality distribution...worth looking at.
“On September 29, Terra Soft Solutions delivered the final release of Yellow Dog Linux v4.0 to their CD manufacturer. It is currently available for download by ydl.net subscribers. Yellow Dog Linux v4.0 is built upon Fedora Core 2, offering both KDE 3.3 and GNOME 2.6.0 desktops with an all new presentation for both the Installer and post-installed desktop environment. Expanded USB support includes many cameras, printers, adapters, and storage devices. FireWire support is now built-in with bootable FireWire made possible through manual configuration. Mac-On-Linux offers the ability to run Mac OS 9 and Mac OS X and now offers automatic network configuration." [Slashdot]