Sour Skittles With Limited Edition Flavor

I bought a bag of Sour Skittles the other night. The sour flavors included strawberry, raspberry, orange, grape and "lemon sorbet, a limited edition ice cream flavor." Normally I pick out the lime ones and hand the rest of the bag to someone else. But these are pretty good [and y'all know I never eat non-chocolate candies that are anything besides peach, lime or pineapple flavored].

The lemon sorbet Skittle, however, does not taste like ice cream, sorbet, or anything along those lines. It tastes like a regular lemon Skittle with sour coating. Sour Skittles normally include sour lemon in the bag, so I'm wondering what's the difference between the two flavors ? Skittles sells a limited edition ice cream flavored pack, but lemon sorbet is not included in that. Hmm...