Updates occur monthly or so.
If you subscribed for email notification you'll receive a short message when new content is online. Meanwhile the entire site experiences constant unannounced correction, enhancement and improvement. The update service is maintained by deoxy.org for the sole purpose of informing you of updates to this site. Unlike the previous 'free' update service this one has no strings or spam attached, and allows inclusion of the actual update text in the message. You'll receive more immediate updates, and it's easier for you to join, leave, or change address for the list at any time.