The way I see people use Office, they may as well stick with 2003. All the "advanced" features of Office 2007 and above, such as *gasp* headings and references, are still being done manually.
One gripe I have with Office though. You can't add in your custom reference style easily. I wish that the new Office would allow you add your own new reference template, and embed it into the file, allowing every computer to be able to display the format easily.