loading up 3 new servers in my server list to check out the new serverlist features, I was presented with two out of the three servers, which I know ARE 13w41a, being displayed as out of date.

Attached an image taken just after the servers had finished pinging (image1.png)

also aside from 1 server displaying its website address, there are no more visible IP Addresses / Server Domains, There is still an option when creating and editing a server to show or hide the server IP, shown also in a screenshot (image2.png)