Since the last release candidate, a number of important bugs - as reported by you, the community - have been addressed, all details available on this release note report.
Thanks go out to the community for contributions, lots of testing and feedback, and given that I hope this to be the last release candidate before a final release of 4.1.0, I'm counting on even more feedback, etc. for this release. Keep 'em coming, people! :-)
The release is available on Sourceforge, please use the user forums for questions and JIRA to report issues.