The design has not been completed. Railconnet press statement stated:
"The passenger cars will be designed, manufactured, tested and commissioned by Hyundai Rotem, with Mitsubishi Electric Australia as technology provider and UGL supporting design and testing of their fleet."
The current pictures on NSW Government website is an 'artist impression' only. One is making assumptions that it will be a downsized OSCar, however that designed is not owned by Railconnect. Fixed seating are the norm on most trains of this type around the world.
And this assumed TfNSW commissioned an artist to create those impressions. I think that way too unlikely as they have way too much correctly matching an OSCAR.
I think it's far more likely the images were created as part of the UGL bid, and the UGL bid would seem to be an extension of the OSCAR order, with the major manufacturing elements outsourced offshore.
If you think about it, it's the only design they could use if they want these trains to service all NSWTrain's current electrified routes. they can no more use another design than run V Sets on the ESR.