For those who are using JIRA Greenhopper for their Agile projects - just check out the new features in Greenhopper new 6.x version. It is really awesome. The best thing I like about it is the ability to start multiple sprinits at the same time in the Scrum Board. In the prvious version this facility was not there. There are other miscellaneous improvements that are useful for sure.
I am sharing with you the 1 hour Release Video of Greenhopper 6.x.