How to determine the Confluence version
The method for discovering your Confluence version depends on the type of Confluence site you are using:
- A downloadable ("server") version of Confluence, which your system administrator has installed on your own hardware.
- A Confluence Cloud site, hosted by Atlassian.
Downloadable versions of Confluence
If your Confluence site is using the standard theme, you will see a line like this at the bottom of the Confluence dashboard, or at the bottom of a screen in view mode:
Powered by Atlassian Confluence 4.2.12, the Enterprise Wiki. Bug/feature request - Atlassian news - Contact administrators
In the above example, it means that you're running Confluence version 4.2.12. (If the version number displayed is just 2 digits, such as '4.2', that is the full version number, and is equivalent to '4.2.0'.)
If you don't see that line, you can visit <Your Confluence Base URL>/admin/systeminfo.action and find out the version from there.
You need administrator permissions to access the system information URL. If you don't have administrator rights, it's not possible to see the version number. Please ask your administrator for that information.
Confluence Cloud
Confluence Cloud should be always under the "latest" version. To find out what improvements come with time, go to 
> What's new to check the Release readiness blog.