In the comments on a question about the new answer votes, Robert Cartaino said:

> The dedicated site for announcements
> is the blog:  blog.stackexchange.com. 
> 
> If that does not provide enough
> detail, there is a "Recent Feature
> Changes" list:
> [https://meta.stackexchange.com/questions/59445/recent-feature-changes-to-stack-exchange][1]
> 
> Beyond that lies meta.Stackoverflow,
> which gets into the really
> nitty-gritty, insider-baseball stuff. 
> 
> Three resources to pick from,
> depending on your level of interest in
> this stuff.


  [1]: https://meta.stackexchange.com/questions/59445/recent-feature-changes-to-stack-exchange