Plugin adds small lables “New”/“Updated” near the title of each Issue in a issues list. Now in a list of issues it is very easy to see which issues were updated since you have seen them before. And which issues you have not seen before.
To install plugin:
Clone source code to plugins directory:
git clone git://github.com/gerait/IssueChangeMonitor plugins/issue_change_monitor
Migrate and copy assets:
bundle exec rake redmine:plugins
Restart Redmine.