As usual I'll be away for the holidays for the next week or so. Updates are likely to be a little sparse until I return.
Sleepycat Software has released Berkeley DB XML 1.2.0, an open source (Non-GPL viral) "application-specific, embedded data manager for native XML data" based on Berkeley DB. It includes C++ and Java APIs and supports XPath 1.0. 1.2.0 adds an API for in-place modification of documents.
Dave Malcolm has posted Conglomerate 0.7.8, an open source GUI XML editor for Linux written in C, and based on libxml2 and the GTk+ and Gnome libraries. This release fixes bugs and reorganizes the code. Conglomerate is published under the GPL.