That's not the new arena in Brooklyn. The arena in Brooklyn has black seats to match the team's color scheme.
That's not even the Prudential Center, where they played the last 2 years. Obviously, that place has red seats to match the Devil's colors.
That floor shot is from the old Izod Center, where they played in the previous 30 seasons. Why they put the floor there for photos is a mystery given the acrimonious way the Nets split from the Meadowlands. I'm guessing the building isn't getting many events nowadays so the Nets paid the management company a few bucks to let them test the floor.