Sprints
Up one levelA Sprint is a focused development session lasting anywhere from a day to a week, in which developers pair off together and focus on building a particular subsystem of Plone.
Davis Biblio-Doc Sprint
An early February 2008 sprint in Davis, California, focused on Plone Bibliography tools and Plone API Quick Reference documentation.
Plone 3 Paris Sprint
Plone 3 sprint in Paris, see the project page and register to the mailing list to keep informed