As far as I know, the only way to get notified by e-mail about new comments on a revision currently is to comment on the revision or be the one who committed it. MediaWiki development has a lot of lurkers who might want to watch the comments on particular revisions (or maybe even code branches), but don't want to comment on every revision. There should be a way to add revisions to a notification list so that new comments will be sent to those who are interested in the new comments.
Version: unspecified
Severity: enhancement