I just uploaded layout notes on http://wiki.qi-hardware.com/wiki/Layout_notes_avt2_RC2_20091230
They are under http://wiki.qi-hardware.com/wiki/AVT2_RC2_Reference_Board#LAYOUT_NOTES, There are the layout histories about Qi's reference design board. We are the open team for everything on h/w platform. If you are interested with this open linux-based platform about consumer products, for example portable game player, mp3 player, dictionary, nano notebook or even like a high platform which can control Arduino board. Then you can use Qi's Ben NanoNote or its reference design board to reach variable applications. Check it if you want to follow hardware development, feedback welcome.