Just to be clear: when you post with "Designer Errata", that means that is official errata and not to be confused with fan posts that offer errata suggestions?
That's correct. I'm in the middle of organizing it right now, but the opening post of each thread (the introductory one made by me) will also have a section called Developer-Level Errata (if necessary). These are rulings made by developers, and are fully official. You can consider them previews of future errata revision documents.
Also, when you do post "Designer Errata", is that replacing the one-stop errata pages accessible from the main page? Or will your posts be incorporated into those?
Developer-Level Errata is supplemental to the CBT webpage errata section. The rulings only replace CBT webpage errata if specifically noted (for example, the TechManual thread has a new BV table that overrides a ruling currently sitting on the CBT TechManual errata webpage).
I ask because my policy is to print out the errata pages and make changes as time allows, and refer to the print-outs when I haven't completed my pen-'n-ink changes. If the most up-to-date errata will now reside here, I'll modify my procedures.
It will always be easier for me to keep a forum and a word document up to date than it will be to find the time to update the website. In addition, the website will only have full errata revisions, made as a result of the rulings in this forum, rather than individual rulings, so this forum will always be ahead. That having been said, we do plan to update the CBT webpage errata section whenever the time and manpower can be spared.
So, to sum up, Developer-Level errata is fully official, will appear in future full errata revisions, and from there will eventually make it onto the CBT Errata webpage section.