The goal is to do a software update Friday Afternoon and should result in minor downtime of most services, this could require a quick reboot of the servers as well as updates to the software.
software : Bamboo
current : 6.2.3
version : 6.3.0
release notes : https://confluence.atlassian.com/display/BAMBOO/Bamboo+6.3+Release+Notes
software : JIRA
current : 7.6.0
version : 7.6.2
release notes : https://confluence.atlassian.com/display/JIRASOFTWARE/JIRA+Software+7.6.x+release+notes
software : Confluence
current : 6.5.1
version : 6.6.0
release notes : https://confluence.atlassian.com/display/DOC/Confluence+6.6+Release+Notes
software : BitBucket
current : 5.6.0
version : 5.6.2
release notes : http://confluence.atlassian.com/display/BitbucketServer/Bitbucket+Server+5.6+release+notes