(In)AccuWeather on Fox pushing their contention that Rita's already a Cat5 based on pressure (IMHO, they're about 2 hours ahead of the curve).
IIRC, there was an anxious push by the masses to get Katrina to Cat 5 too. Best to see that a storm will sustain the winds, and thus the category rather than jump the gun for a record or to satisfy a thrill. There is no landfall between now and two hours from now to make a difference.