Why would they need a specially designed screen? I would guess that they're looking at what's on offer from various vendors and comparing them to see what works, right?
Most of the time the touch and display is delivered as one module (similar to the iPhone where the whole front is one module) The front would probably need to be customized so it fits their design and they would probably need a flex designed also so it fits with their board design... maybe they are designing their board around an off the shelf display module? It’s usually a puzzle - not easy