There are a couple of minor issues listed in the BUGS forum that have not been addressed as of yet.

Granted with so many things that KiX can do it is unlikely that most users will run into these issues, but for those that do it can be quite frustrating to find that it's actually the version and not your code that is the culprit.

If you're happy with 4.60 that's cool. I would rather flesh out more of the issues though before I start using it. Since Ruud seems to be busy and unable at this time to respond then there is no alternative to getting such bugs fixed right now.