The kit constist of a 40 GB Hard disk, 10/100 Mbit/s Network Adaptor, USB Keyboard, USB mouse, Monitor Cable and DVD discs that contain the Linux installation, RTE and hardware manuals.
The kit should be available all over the world by the end of this summer. Some more information over at linuxplay.com
Personally I am looking forward to converting my favorite game machine to a PC running Linux! :-)