I created two websites on North Central US regional data center. 2 others on East US datacenter.
In VS Pro 2013, update1 using latest Azure SDK, when I open Server Explorer and expand websites, all 4 show up. But when I go to filter (because I am admin in more than one subscription), and try to use Regional filters, there is NO North Central US. Only East and West. I filter by these two alone and my websites on the North Central US datacenter stop displaying. I have to select All Regions in order to get these to display in the list of websites.
There are no issues seeing the websites in the Azure management portal.