Current status:
Advanced and Calligraphy (English) are up:
http://inkscape.org/doc/advanced/tutorial-advanced.html http://inkscape.org/doc/calligraphy/tutorial-calligraphy.html
While working on the conversion, I updated and edited all tutorials that I authored.
There's also a first translated tutorial in DocBook, Basic in Spanish:
http://inkscape.org/doc/basic/tutorial-basic-es.html
thanks to Jeffrey Steve Borbon Sanabria. All these are also uploaded to Inkscape CVS in SVG.
I wrote a section on how to translate tutorials:
http://inkscape.org/cgi-bin/wiki.pl?TranslationInformation
Please read it if you want to translate some tutorials or convert existing translations to DocBook, and write me if you have any questions.
Matiphas: your French ones in the patch tracker are SVG, can you please DocBookify them?
Thanks everyone!