Hi, As suggested by Thomas in the thread relative to renaming document events (see http://xwiki.markmail.org/thread/62a3yaxiuosx4f6o ), I would like to introduce a new module, xwiki-legacy, to host backward compatibility code for modules. Rule would be that of course nothing should ever depend on xwiki-legacy. It will also help developers that relies on XWiki modules to upgrade to new code when we deprecate things, since as soon as they upgrade their dependency, they will not be able to build unless they fix the deprecated calls (It would not be the case if each module would host its backward-compatibility code). First use case would be for renamed events. A listener in xwiki-legacy would listen to the new document events, and notify the old corresponding ones. WDYT ? I'm +1 Jerome.