Found and fixed a bug at work where XMLRPC requests where being serialized using the SOAP document-literal serializer when serializing arrays.
As far as XMLRPC is concerned, there is good news and bad news (I suppose). The bad news is that XMLRPC development is not really progressing that much. On the other hand, we are building out our XMLRPC unit test suite to make XMLRPC more reliable from release to release. Until this release XMLRPC simply did not work in 0.65.