When I look at the list of downloads there are quite a few, the most recent preview version is from 22 december with the following description:

The Java Developer package places an additional copy of the Java SE 6 bundle in /Library/Java/JavaVirtualMachines/. This copy is installed without disturbing the existing system JDK. This package also contains additional developer content not provided in general Java releases via Software Update (due to size), such as JavaDoc jars, JDK source jars, and documentation for Ant, Maven, and other tools. The src.jar, docs.jar, and appledocs.jar are present inside of each developer .jdk bundle.

They make a point of stating that it's explicitly forbidden to share these files with anyone, however you can get a dev ID yourself by registering for free here.

Personally I have only installed javacvPro on Windows 7, which worked ok. I have run all the examples. All worked except the ones with the cascade/haar detection (they search in the wrong path, I think it's really a bug in the library). Unfortunately there is no way to give feedback yet. At the moment it says under support:

Pour tous les retours, questions, suggestions, une adresse mail de contact sera prochainement mise à disposition.

So hopefully his email address is added soon, because of course the detection part is one of the most interesting aspects of opencv. Also there are some cool things on the list for the 0.4 version it seems.