The following upgrades planned for the week beginning 13 September 2015 have been deployed for all Atlassian Cloud customers:

• More storage for instances with more than 500 users
• JIRA 7.0-OD-05
  
• JIRA Service Desk 3.0.0-OD-02
  
• JIRA Portfolio 1.10.5-OD-001
• Confluence 5.9.1-OD-2015.38
• JIRA Capture 2.9.4

Take a look at the 13 September 2015 to 19 September 2015 upgrade history for details.