In Rational Team Concert version 3.0, there have been some changes based on user feedback. Consider the following changes as forward-looking and for informational purposes only. Check with an IBM representative for the final licensing terms.
You can now install as many servers as you have user licenses. This means you can deploy client access licenses across as many or as few servers as you need. The most common advantages are to support disaster recovery installations, maintain separate test or training configurations, and enable teams who need many servers for physical security isolation.
A new user license called Rational Team Concert Stakeholder is now available as an entry-priced license for users who don't need the planning capabilities. This license instead allows a Stakeholder to collaborate with a team via work items and dashboards. An example might be a user of your software who needs to report defects and view the project's status.
Another entry-level license named Rational Team Concert Developer for Workgroups is also available now-a-days. Limited to fifty authorized users per server, it is identical to the Developer license, except it does not support the new Distributed Source Control feature. It can be combined with any other 3.x license on the same server, allowing a team to grow beyond the initial fifty, without having to trade-in their existing "Developer for Workgroup" license.