Updates for both games are posted on the main page pretty much as soon as they happen - the most recent one for CoC2 was yesterday or the day before. CoC2 patches will specify in the title whether they're a backers release or public release, and if the latter, will also contain a "new since last public patch" section in addition to the "new in this patch" section. TiTS patches will specify in the patch notes whether a particular piece of content is backers or public; if not specified, it's generally a bugfix that goes live for both backers and public.
Unless you're talking about the original CoC, in which case, no; it's as complete as it's ever going to be (unless you count mods, which have their own subforum in the CoC subforum; this is the CoC2 subforum you're asking in).