Instead of publishing an answer just for a simple question with one word answer, dont know why it is making such inconvenience for customer to know the version number of either Jira or Confluence ?
Still am unable to get the answer, earlier versions are very much simple, when i click on the question mark symbol or About Jira on the top of the site, there itself, it was showing the version no, what i installed and using currently, how simple and quick it was.
When content is published, lets make things simple and later you publish the content what ever you want - which would be helpful / not needed for any customer, they take it later on need basis.