If you really want to see it, resetting your network settings will show it. It's...

justinweiss on May 19, 2010 | parent | context | favorite | on: AT&T Internet Tethering Comes to iPhone OS 4 Beta

If you really want to see it, resetting your network settings will show it. It's not really worth it though, considering you can't do anything with the setting right now, and you'll have to re-enter your WiFi/VPN/etc. settings after the reset.