Here we have Mistelix 0.21. Mistelix is an open source DVD authoring application with also Theora slideshow creation capabilities for GNU/Linux systems.
Lots of stabilization work goes in this version that introduces 11 bug fixes and some updated translations. It can be download it from:
http://mistelix.org/files/mistelix-0.21.tar.gz
MD5SUM: 6b75a5a1a96169f7366223859278eae3
And it is already packaged from some distributions. If you test it and have questions, you can use the public forum. If you find bug, do report them.
This is the version that I will be showing during my lightening talk at GUADEC next Saturday 4th of July and later at GUADEC-ES, still to confirm if it will be the 7th or the 8th of July.