Word 2010 advanced (orange) Content Control field that updates automatically

What you want is control controls that are linked to Custom XML. The orange controls are linked to document properties and work on the same basis .

If you want a quick solution you can actually just use one of the document property based content controls to achieve what you are looking for. Change the name of the content control by going to the Developer Tab, enabling Design Mode and changing the name under properties. The content is stored in the document property and you will see the linked behavior still remains intact when you modify one of the controls.

Otherwise you will need to setup your own custom XML property. This is not so easy, however one of the Microsoft MVP created a great program to help with that.