Sanya posted the patch notes for 1.63C on the Camelot Herald. Most the notes focus on the Foundations expansion, here is a excerpt from the notes, click here to read the rest.

With this patch, we've fixed many bugs and issues related specifically to Foundations. We have also wiped the existing houses. For more information about Foundations, go to www.camelotherald.com/housing/ where you'll find information about the expansion, including an updated user's guide, screenshots, maps of the housing zone, download locations, and other invaluable information.