There's been a lot of hemming and hawing about Final Cut Pro X since its release. But now here's at least a little good news: a reference to XML importing has been spotted inside the software by Brazilian site MacMagazine. MacMagazine found the code reference as seen above, and they were able to run the function and get a bare-bones bit of placeholder code for an XML importer.
It looks like Apple either planned to include an XML importer at some point or will be including one in the future. Apple's already promised an update to the XML workflow, so maybe this was implemented but then reserved for a future revamp.
This shows that someone at Apple is thinking about these issues, both during the development of Final Cut Pro X and today. That's probably not a lot of solace to editors who still have issues with the new software, but hopefully Apple will justify all of the changes soon, either with updates to the app that restore functionality, or by introducing replacements for any workflow problems editors are having.