Coming up in 3.1 is the addition of the often debated admin bar. Long time wpmu users know at one point we had it rolled in. Well, they rolled it in to WordPress itself.
It has been severely altered, so many of the items have been stripped to essentials. A decision was made to remove all the super admin functions and place those in a separate plugin.
Snack bar is the plugin you will need for this. On the plugin page it says “do not use” but if you are a brave tester, please feel free to play with it (nom nom) and provide some feedback.
This appears on both the front of the site and the admin area.
I think the admin bar makes sense for really beginner users and for those using the network feature, as long as they have the snack bar available. What do you think?