These aren't out until tomorrow but I picked up a couple at $2.99 a piece (compared to $2.49 for a regular Chalupa) under an early pre-order offer.
Compared to the Chalupa shell, the Quesalupa shell is thinner and less bread-y. With its fried, just slightly crisp quality, it reminds me more than a little of a chimichanga. I love chimichangas so that's a good thing.
Nutritional Info - Taco Bell's Quesalupa - Beef
Calories - 460 (from Fat - 240)
Fat - 26g (Saturated Fat - 11g)
Sodium - 890mg
Carbs - 38g (Sugar - 3g)
Protein - 19g