Picture above shows some details of MG Duel including the look of the gundam when the assault shroud is on and off. A sample of the boxart is also shown on the lower right portion.
Some of the images released show the add-on parts for the Duel Gundam, one point of it's articulation, it's look if the assault shroud is attached or not, and some of it's poses and armaments.
I guess this would be an awesome kit especially that it has also a bazooka, which is not present on its High Grade kits. Master Grade Duel Gundam Assault Shroud is scheduled to be release on the 17th of this month.