Well, all the links at the bottom of the letter seem to 404, so it seems like they didn't mean to publish this yet.
The link was circulating in IRC. It was pasted to a channel I'm following with a comment "changes in Freenode". Looked interesting enough to be a HN submission. I've no knowledge how freenode is actually managed. Apologies if it wasn't meant to go out. Seems that I don't have an option to delete it.