That's it we have done it! if you have followed the series of post "We will put wireless on NanoNote" (I) & (II) , you will be happy to know that we have finish to produce the first batch of atben/atusb boards to enable wireless communication between Ben NanoNote and whatever thing running Linux and having a USB host. In spite of there is work to be be done yet on the software stack The driver level code for 802.15.4 has been demo'd. A production test program is working which verifies that a board is not severly compromised. There are a small number of programs to send and receive data. However, there's still a lot to do in order to have a useable 6LoWpan stack but at least now we have hardware available to develop on it :)
You have them available right now on the Tuxbrain's shop, more info inside the post