Not sure how high they are stacked but the new sandwich features a laundry list of ingredients (compared to most of their menu anyway) including pepperoni, salami, Swiss cheese, banana peppers, roast ham, vinaigrette, red onion, tomatoes, lettuce, and garlic aioli on a toasted Italian roll.
The suggested price for the sandwich is $4.99.
Arby's used to offer something similar on the regular menu, the Classic Italian Toasted Sub, that actually included a lot of the same ingredients. Key differences is that the Classic had mozzarella instead of Swiss cheese (Swiss is a somewhat odd choice for an "Italian" sub, but I'm guessing they were looking to use already stocked ingredients rather than work out the logistics for new ones), came on a ciabatta roll, and did not include garlic aioli.
I was told the sandwich will be available until at least the end of August.
Nutritional Info - Arby's Loaded Italian Sandwich (306g)
Calories - 630 (Calories from Fat - 320)
Fat - 36g (Saturated Fat - 12g)
Sodium - 2470mg
Carbs - 47g (Sugar - 5g)
Protein - 31g