New Nightly Builds Feb 12, 2011
You will see two different pairs of files for each night. One set (zip and gz) for the Trunk and one for Development. (These words appear in the name after the build date.)
Trunk builds are made from bug fixes to the currently released version of Zenphoto. You should feel confident using these builds as they contain only fixes to problems identified in in the release. You may even be directed to install one of these builds in response to a problem you have reported.
Development builds represent the future of Zenphoto. Eventually this branch of changes will become the next release of Zenphoto. (...)