It looks like its a radial continent that IS the eastern US, maybe the result of an impact caused by "alien technology"?
Here's a screen shot:
Australia wasn't enough for him. Now he wants his own continent
and the cheap water-front property. Notice that the radial design maximizes the amount of coastline, so he's pretty smart in his insane way.
some of the cGI looks like video game quality.
Yeah, there's one sequence in this trailer of Superman landing that looks just like the scene in the Hulk trailer of the Hulk catching a tank. And as Nightwing noted, the Superman/Lois flight scene was similar to the X-Men - but seeing the way Superman ripped the wing off of a plane makes me hopeful that there will be a lot of original stuff here too.