This likely has everything to do with Ge writing a medium-sized book for his doctorate.
http://electro-music.com/forum/viewtopic.php?t=26189
Why he choose to only post that to the forum and not to the list as well isn't quite clear (to me) but that would explain he absence. At least it's a cool read, some of the notes on the how and why as well as more in-depth notes of Shreduling are quite interesting.