When Zanshin 0.3 was released, it took just an hour or so to update the FreeBSD port for it. Since then, the real K-F folks Tobias and Rafael have put some polish on the port, made it compatible with FreeBSD 9-STABLE and 11-CURRENT, and pushed it into area51.

So, if you use the experimental KDE-on-FreeBSD repository, you can build Zanshin 0.3 today. Its dependencies are KDE4-based, so it is compatible with the official ports tree as well. Do follow the instructions for merging area51-trunk with the official tree though, since there's all kinds of massaging that has happened already as preparation for KDE Frameworks 5, and that massaging needs to be merged as well.