The W3C XML Protocol Working Group has published four proposed edited recommendations for SOAP:
Besides incorporating errata, the primer adds an "an overview of the XML-binary Optimized Packaging, SOAP Message Transmission Optimization Mechanism and Resource Representation SOAP Header Block specifications and their usage." The adjuncts draft "incorporates changes to the SOAP Request Response Message Exchange pattern (MEP) to permit the SOAP envelope in the response to be optional, to allow for one-way message interactions." Comments are due by February 2.