Matt, best solution for you will be to review Atlassian's release notes. Each organization has different needs so the benefits will change accordingly.
Go to https://confluence.atlassian.com/display/JIRA/Production+Releases and work your way up or down to understand what new features were added (quite a lot in your case), what bugs were fixed.
I can point out that you'll have the ability to use a lot of updated plugin versions, which is quite important to most users.
Hello, Community! My name is Gosia and I'm a Product Manager on Jira Server and Data Center here at Atlassian. Since 2002 when we launched our public issue tracker, jira.atlass...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs