Unfortunetelly this project will no longer be supported. Last version of Redmin that I worked with it was 1.0.3 but some further versions may also work.
Please let me know how do you use Scrum and fill out this survey: http://www.surveymonkey.com/s/339S5CB

We are working on great tool for managing projects with Scrum and Kanban. You can check it out here: http://tacticsapp.com


Scrum PM v. 0.1.6

This version is compatibile with Redmine 0.9 stable. Previous versions may not work due to differences in new Issue form.

Scrum PM is a plugin for Redmine for Scrum project management. Redmine Version class becomes a sprint and issue becomes task. Most actions support drag and drop, eg. dashboard where you can change status of your task simply by draging it to another column. 
Some more interesting stuff planned:

# Support for uml driagram generators railroad(Rails) and umlgraph (JAVA).
# One click documentation generation (rdoc and javadoc)
# Continous integration with cruisecontrol
# Velocity planing


HOW TO INSTALL:
 1. Install plugin `git clone git://github.com/software-project/scrum-pm.git vendor/plugins/redmine_sprints`
 2. Install Attachment_fu `git clone git://github.com/technoweenie/attachment_fu.git vendor/plugins/attachment_fu`
 3. Install Googlecharts gem `sudo gem install googlecharts` (note. uninstall GCharts if installed)
 4. Run the usual  plugin migration `rake db:migrate_plugins RAILS_ENV=production`

Change log

0.1.6

# Updates for Redmine 1.0.3. Changed behavior of adding tasks in dashboard.

0.1.4

# Added in place edititors for user assignment to issue, added unassigned issues assignment to user stories, added stats to dashboard, small clean up.

0.1.3

# Added burndown chart. User story is done when all dependent issues are done.

0.1.2

# Added compatibility with Redmine 0.9 stable

0.1.1

# Fixed issues with reassignment issues to version
# Fixed most links(edit/delete/show)
# Added status panel

0.1.0

# fixed sprint <=> user story assignment bug,
# added proper i18n for english and polish