Bill, Fleur de Licious is the only "week" of that type I know of, although of course there are plenty of one-day events like Taste of Derby and Taste of Derby Festival, Taste of Frankfort Avenue, etc., almost ad infinitum.
Frankly, those new ones - especially one called "502" - sound a little iffy to me. I'd be curious to know what makes them "official."
Hmmm ... Louisville Restaurant Week's page includes such professional phrases as "stayed tuned" and "What's you favorite." Not reassuring ...
Owner of 502 is someone named Belinda Gates. Louisville Restaurant Week is silent on who runs it, although it gives their phone number, (502) 438 8579. It appears to be an effort to make bucks by selling places on its restaurant list for $30 a shot.