Gerald Schmidt has released XML Copy Editor 1.0.9,a free-as-in-speech (GPL) XML editor for Windows and Linux "with DTD/XML Schema/RELAX NG validation, XSLT, XPath, pretty-printing, syntax highlighting, folding, tag completion/locking and lossless import/export of Microsoft Word documents." This release adds incremental find and replace.
Advanced Software Production Line has released libaxl 0.4.1, a C parser for XML. This release fixes bugs and improves Windows compatibility. The API has some serious problems, but the developers have already frozen it, so they won't be fixed. I recommend against this library. There are many superior alternatives available.