Trinity Plaza will be slightly taller and spread far wider than SoMa Grand to the west. SoMa Grand can be seen as the grayed out building at the far right of this rendering.
Photo by peanut gallery:
As I am hoping, the colors, shapes and textures of Trinity Plaza might help tie SoMa Grand and the Federal Building in somewhat as a group. It's just a bit unfortunate that the more outstanding Federal Building causes the more conventional SoMa Grand to look worse being next to it by comparison from the southeastern views.