Different front panels are available for order to swap out. I ordered my case with both the standard front panel as well as one for the Nextion 2.8" display. That way I could save shipping later for the second panel.
Everything you need is included. No instructions required, the photos on the included CD were fine.
BTW I wanted Siemens Grey but it was out of stock. I asked them to substitute the standard Grey and it is sweet!