I got a large order as part of a $5 Fill Up meal (with a side, biscuit, cookie, and drink); you can also buy a large order a la carte for $3.99.
These were basically like KFC's previous Popcorn Chicken for the most part. There were a few differences though.
Taste-wise, the new Popcorn Nuggets feel the same as the previous version with a fairly noticeable and pleasant seasoned flavor.
Nutritional Info - KFC Popcorn Nuggets - Large (170g)
Calories - 570 (from Fat - 300)
Fat - 33g (Saturated Fat - 4g)
Sodium - 1890mg
Carbs - 37g (Sugar - 0g)
Protein - 30g