The following upgrades planned for the week beginning 30 August 2015 have been deployed for all Atlassian Cloud customers:

• Bamboo 5.10-OD-4
• Confluence 5.9.1-OD-2015.36
• Team Calendars 5.3
• JIRA bug fix
• JIRA Agile bug fixes
• JIRA Service Desk 2.6.0-OD-11
• Confluence Questions 2.1.13
  

Take a look at the 30 August 2015 to 5 September 2015 upgrade history for details.