On October 17th, the International Workshop on Internet of Things Technology and Architectures (IoTech) was held in Valencia/Spain, co-located with the IEEE MASS conference. The objectives of the workshop read like the who-is-who of several WS4D efforts: IPv6, 6LoWPAN, RPL, CoAP, EXI , IEEE 802.15.4, IoT, WSN etc. So also WS4D joined the IoTech and presented the SOAP-over-CoAP approach. But you might find other things among the presentations.
Since the movement towards the Internet of Things and Smart Objects is gaining in momentum more and more, WS4D is proud to contribute to this field. Therefore an Internet Draft is published in the active IETF CoRE working group, describing an approach to bind SOAP to the CoAP protocol. Since CoAP is currently in draft state, the SOAP-over-COAP is it of course also. Nevertheless, contributions and feedback to the draft are more than welcome. Find the draft at http://tools.ietf.org/html/draft-moritz-core-soap-over-coap.