The XML Protocol Working Group has released "SOAP Message Transmission Optimization Mechanism" and "XML-binary Optimized Packaging (XOP)" as Last Call Working Drafts. The drafts improve SOAP Version 1.2 performance. Comments are welcome through 29 June. Also published are "XOP Frequently Asked Questions," the "Attachment Feature" which is
superseded, and the completed "Use Cases and Requirements." Visit the Web services home page.