In order to provide a more consistent experience with the System Center product family, we've moved the Orchestrator blog to another blog at http://blogs.technet.com/b/orchestrator. Be sure to go there for all the latest info!
This post has been updated for Orchestrator 2012 and re-posted to the new Orchestrator blog site: http://blogs.technet.com/b/orchestrator/archive/2012/05/07/new-configuration-manager-2007-ip-extension-testers-needed.aspx