With the latest PTR build tonight being labled as the "Release" candidate, Patch 4.0.1 which will change the way many things function (including macros and add-ons) is right around the corner! Here's a link to help keep up with the larger add-ons and their compatibility with the upcoming "Cataclysm":
Link: http://www.wowwiki.com/Cataclysm_AddOn_status (http://www.wowwiki.com/Cataclysm_AddOn_status)
Wow, that's mega-useful, James. Great find.