This is a major release that provides Audio Independent Views and full support for OggVorbis, plus a number of other enhancements and bug fixes.
More details at http://www.jthink.net/jaikoz/jsp/news/build1031.jsp
The next major release will include AAC support, however the cost of Jaikoz will increase slightly at this point so if you are thinking about buying Jaikoz now is a great time to do it and save yourself some money. As always any purchase of Jaikoz gives free upgrades for life.