Katrina hasn't had her name officially retired yet, but you're absolutely right. Her name will be retired, and she's the first storm in over a century to destroy a major American city. The earlier one wasn't named.
No word on upgrading Rita at present. I'm scared to death of the BAMM model runs showing a Louisiana/Mississippi landfall though.
Brian Norcross at WFOR-TV/DT Miami will be on at 11 with a detailed analysis of the 11P update. They'll be streamed at http://dayport.wm.llnwd.net/dayport_0025_live.