Updating from 8.1 Preview to Final

Does anybody out there have information on how the update process from the preview to the final release of 8.1 will work?

The only posts I've been found regarding this have been through the Windows 8.1 Preview forums on Microsoft Answers.

Here's the link people are throwing around:

http://news.cnet.com/8301-10805_3-57587794-75/how-windows-8.1-upgrades-will-get-to-you/

I'm a bit reluctant to trust this information because 1. it's a month old, and 2. Microsoft has been terrible with providing clear and concise explanations recently.

Are we seriously going to have to reinstall Windows just to get from 8.1 preview to RTM? It seems like a bit much.