Atlassian has just released JIRA 6.2 EAP 5. 
^{Note: EAP 4 was cancelled}

The major highlights of the JIRA 6.2 EAP releases so far are:

• Auditing now available for admins
• Workflow editor improvements
• New 'attachments' JQL field
• Full release notes here

JIRA 6.2 EAP 5 will be pushed to all JIRA OnDemand customers this week and it is also available for download.