QUOTE(UCLAfan @ May 7 2007, 06:26 PM)

Now I think I've come very close to hearing it all.
Diet Coke is adding vitamins to its current formula and sweetening it up. While this doesn't do me any favors, I'm sure you will might find this tidbit interesting.
Coincidentally, drinking a can now - not because I bought it but because my assistant bought some on a lark. It tastes a little bit different than regular Diet Coke - the article you linked to says it's a bit sweeter but I don't think so. I'm trying hard not to think it has an "after taste" because of the vitamins and minerals. The amount is modest anyway - 25% RDA of Niacin, 25% of B5, 25% of B12, 15% of Magnesium and 15% of Zinc. And, of course, only 40 mg (2%) sodium.
I've only seen marketing stories on it - nothing about how the carbonation or caffeine or other chemicals might affect absorption of the minerals. Hey - if you're gonna drink Diet Coke anyway, might as well get a bit more than just artificially sweetened carbonated brown water, right?