Antenna House, Inc has released XSL Formatter 3.1 Lite for Linux and Windows. This tool converts XSL-FO files to PDF. The lite version costs $300 and up on Windows and $900 and up on Linux/Unix, but is limited to 300 pages. Prices for the uncrippled version start around $1250 on Windows and $3000 on Linux/Unix.
The Gnome Project has released version 2.6.11 of libxml2, the open source XML C library for Gnome. This release doesn't add any new features but fixes lots of bugs in ancillary technologies like XInclude and schemas (the core XML parser seems fairly stable and bug free at this point) and makes various performance improvements. They've also released version 1.1.8 of libxslt, the GNOME XSLT library for C and C++. This is also a bug fix release.
Jim Rankin has commenced work on Excelsior! Path, an open source XPath library for Mac OS X's Cocoa API.