Redmine

Sometimes, when developers finish some issue in Redmine, they would write some note concerning either new feature or bug fix. My idea was to get something like Roadmap list which is already implemented in Redmine, but to list not only issues solved in particular release in simple one-line format, but a more detailed report. I understand I could probably do it with some reporting software, but I was wondering if something like that would be possible in Redmine itself.
Is it possible to customize the Roadmap list to display issues in more than one line per issue? Also, is it possible to export this list to e.g. PDF? Or I have to write a plugin for that on my own? :)