Groups are one one of the most important and easiest ways for hub users to collaborate within their projects. Groups not only wanted a way to have discussions, and have their own private resources, and even share a blog, but they also wanted a way to showcase their group to the outside community.
The New HUBzero groups do just that. They have all the same features as before, but now with a whole slew of new ones. The main one being group pages, which is a way for groups to customize the public facing side of their group. Group Managers can embed content on these pages, with the same wiki-syntax used throughout the rest of the hub. Each group can have any number of these pages. Also on these group pages managers can choose to load custom modules or smaller content blocks on the side of the content.
Among the other new features to groups is the ability to have a group identity, refined access controls which can be set per group, a group calendar, improvements to the inviting process, and of course a complete redesign to the group interface.