Q: What does a status change from 'Under Review' to 'Revision' mean?

From wht I understand, you have re-submitted your manuscript after revision to the same journal and the status has changed from ‘Under review’ to ‘Revision’. It is slightly strange that the status 'Revision' is being displayed now although the submission system did not show this status during the previous rounds of review. Journals usually have standard status changes like 'Under editorial processing,' 'Under review,' 'Decision pending,' 'Decision in process,' etc. that are repeated every time a revised manuscript is submitted.

‘Revision’ here could mean that your manuscript requires further revisions to be accepted. It is possible that these are minor revisions, which you would be checked by the editor and would not need another round of review. However, these are just possibilities; I cannot really provide any definitive comment. You could consider reading the journal editorial policies and peer review process to understand the different review stages. If this is not available, you could also consider emailing the editor asking about the status of your manuscript.

Related reading:

• Why has the status changed from "Reviews completed" to "Under review" and then to "Reviewers assigned"?
• What should I do if the status "under review" shows twice for my revised manuscript?
• What should be the status after submission of a revised manuscript?