There was a demo of the product by Sedna which is slated for release in Summer 2007.The demo is available in a movie file which would be uploaded on Youtube and hence have not recorded much 
Below is a small insight into what ThinFone is all about :
ThinFone is a WLAN device which acts as a cordless extension to your PC and provides VoIP Call Transfer and Audio Streaming facilities. It is 802.11 b/g compliant and comes with inbuilt speaker, microphone, antenna, battery and USB port. It is Skype, Yahoo Messenger and GTalk compatible provides VoIP call transfer capability for all these clients. It can also be used to stream high quality audio from the computer playing any kind of locally stored, CD or an Internet Radio service.
The ThinFone System consists of a Server software and the handset device. The Server software is installed on a computer running Windows XP. The ThinFone system has been designed for residential users and requires a pre-installed 802.11 b/g wireless router along with the broadband connection.
The video would be available on my blog once it is available 
Hey thanks for the mention. An edited version is available here.
http://www.thinfone.com/blog/?p=8
Hi,
I was particularly looking forward for Thinphone updates. Couldn’t attend this barcamp unfortunately.
It was first of the article I could find. Thanks.