As I recall the original ad showed with
shoulder straps. The new ad mentions sternum strap, which is attached to the shoulder straps.
Either way you're getting the best ruck available
If you want to complete the setup get the assault pack that attaches to the ruck (piggy-pack) and a hydration bladder. There is an endless assortment of surplus PALS-compatible pouches, and plenty of room to use them!