If you have not already read the most recent post in the blog by Dave Simeone, Civil 3D Product Manager, and Dan Philbrick, Civil 3D Development Manager, about Civil 3D 2007, Vault and Data Shortcuts, I STRONGLY ENCOURAGE you to do so. Simply click on the title of this post to see what Dan says about these subjects.
He also mentions that anyone that wished to be a part of the beta program for their plans, they can make it so.
Lastly, Dan states that they will provide more details this Friday during the weekly webcast. Do not forget, to view the weekly webcasts it is necessary to register.