I have set up branches in the SVN repository so that it is easier for you to maintain updates. The idea is that once a major release of Xataface is available, a branch is created from which you can host your Xataface installs. These branches will receive bug fixes only - no feature additions, so you shouldn't have to worry about your release breaking if you run an SVN update on it.
The following branches have been created:
Contains the current latest 1.3.x release.
This branch will continue to receive bug fixes and security updates going forward.
Contains the 1.1.x release (which is the last release that still works with PHP 4).
This release will only receive critical security updates going forward.
If you want to ensure that your installation is always up to the latest patches I recommend you use this distribution mechanism rather than the conventional download/install releases as this way you can receive updates as soon as they are available rather than having to wait for a new release.