This is the first and hopefully final release candidate of the 4.1 release cycle. Being a release candidate, this release is sparse on new features, concentrating instead on stabilization of the features brought in Milestone 1 and Milestone 2. The 4.1 cycle brings new 3D graphs made with pure XWiki syntax, safer Groovy scripting, and new localization through timezone settings.
See the XWiki Enterprise 4.1 Release Candidate 1 Release Notes for more information.