All changes since version 0.7.5 are covered in detail in the ChangeLog files. Here you'll only find the most important changes. Ported from demo code by Simon Budig.
All graphics objects support meta data.
There's also a dialog to add, edit and remove meta data in the Xtns menu. A PDF export filter. This is the same that's also in 0.6.9. New implementations of the impert and export filters for the sk-format. The format has also changed somewhat.