The change log at 
ChangeLog.html
 describes the recents commits
to the CVS at 
http://cvs.gnome.org/viewcvs/libxslt/
 code base.Those are the public releases made:
1.1.9: Aug 22 2004:
   - build fixes: missing tests (William Brack), Python dependancies, Python
    on 64bits boxes, --with-crypto flag (Rob Richards), 
   - fixes: RVT key handling (William), Python binding (William and Sitsofe
    Wheeler), key and XPath troubles (William), template priority on imports
    (William), str:tokenize with empty strings (William), #default namespace
    alias behaviour (William), doc ordering missing for main document
    (William), 64bit bug (Andreas Schwab)
   - improvements: EXSLT date:sum added (Joel Reed), hook for document
    loading for David Hyatt, xsltproc --nodtdattr to avoid defaulting DTD
    attributes, extend xsltproc --version with CVS stamp (William).
   - Documentation: web page problem reported by Oliver Stoeneberg