latest jira server version

[Gerard Rodolfo]

what is the latest version of JIRA

[Nic Brough -Adaptavist-]

Released, tested, available, release-candidate, beta, early access?  Cloud or server?

Yes, I've just made a point that your question is not really answerable because there's lots of things to look at.  And, any answer I give becomes wrong the second Atlassian make a new release, which might be shortly after I click "save"

However.  There are only really two answers that matter.
If you use Atlassian Cloud - you don't care about the latest version, you're on it.
If you use Atlassian Server products - see https://www.atlassian.com/software/jira/core for the base product