Having watched the documentary on GMO foods, which reveals that those in charge of food safety in this country have treated with scorn the simple request that products made with genetically modified organisms be labelled as such, I have little faith that the Food and Drug Administration will not grant the request of the dairy industry to to alter the definition of "milk" to include chemical sweeteners such as aspartame and sucralose without putting "Low Calorie" or "Reduced Calorie" on the label. The artificial sweeteners would still be included in the ingredient list on the packaging, but the main label, that which most people read, would give no hint that the product was artificially sweetened.
I say that even "low calorie" is disingenuous. "Artificially Sweetened" or "Contains Sucralose" (Aspartame, whatever) ought to be in large, bold print on the package. Once upon a time, "no sugar added" was synonymous with "unsweetened." Now we must drill down to the small-print ingredient list to find out this important information, and more than once I've been caught and ended up at home with a useless product. It is as if the surgeon general's warnings were printed on the inside of cigarette packages.