JIRA doesn't have the ability to query review status out-of-the-box, since that information is delivered from Crucible.
If you are using Fisheye with Crucible, you can view the commit graph which will tell you which changesets have been reviewed and which have not:
If you mandate that each commit has a JIRA issue key in the commit message, then this will be as easy as checking the commit graph to see which changesets are not reviewed.
Hi All! We’re excited to share the launch of an announcement banner that lets Jira site administrators communicate directly to their users across their Jira Cloud instance. ...
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