In KDE, there is a mailing for notification of every change in KDE SVN. This mailing list is called kde-commits. The mailing list is not read-only, and often there are discussions about a commit, when other developers do not find the commit right.
This mailing list is with very high traffic. It is recommended to have a (cheap) broadband Internet connection if you want to subscribe to this list.
You can subscribe it at its Mailman interface.
The archive is at lists.kde.org. (The archive is public.)