PiBox 0.4.0 release image has been published
First public release of binary PiBox embedded distribution.
I've pushed the first public release of PiBox to Ubuntu One. It's only about 258.6 MB so should be an easy download. It contains all binaries required to build the SD card and scripts for formatting (mksd.sh) the card and then installing (mkinstall.sh) the software to the card.
Be sure to read the wiki page for information on how to use the format and install scripts.