We will see several item enhancements in the 2011 release, such as:
Continuing to enhance the use of slanted column conditions.
The ability to remove beam system and truss family configurations while retaining the model elements.
A growing capability of modeling and design features as Extensions for Subscription users.
Additional productivity enhancements for 3D alignment, Drawing Lists and Text formatting shortcuts.
Although there is much more, I hope you find the concrete joining and cleanup enhancements worthwhile.
Check back soon for additional comments, views and other information.
Check out the New Features for Revit Architecture as well, since these platform changes will affect Revit Structure as well.
Have fun exploring the new release!