I'm on vacation and won't get to this for at least two weeks. As of today, Adobe hasn't released the new API (I tried their download link for the new version, but that downloads version 6.0).
I definitely will get to this when I can. I'm using the new version as well (once I get back home).
In the meantime, if anyone gets a chance to identify what's changed, I'd appreciate it. It'll be in the Lua part of the plugin, not in the C++ application.
Adobe's support of plugin developers is terrible.