As I posted earlier, I'm working on the PEAR package Services_Ebay. To update it to new eBay XML schema, I've done some of the Calls/Models/Examples and touched the request skeleton to be compatible with eBay's new schema and finally committed them to the PEAR CVS. But unfortunately I can't continue with this job as before. (hmm, US export restrictions and the fact that I'm an Iranian?)
I've just committed these changes to get attentions from other developers to help in the update process, this CVS version is just for this porpose and NOT FOR PRODUCTION USE.
If there's any interest on your part to help with this package, I've created a file named progress that indicates which parts of the package is updated and which one requires more efforts.