Wow, from 3 tracks, 2 platforms (one island and one side), overhead walkway and new east entrance with passenger pick-up and drop-off loop, to a small extension to the existing building with stairs down (not escalators) to the single track and single platform and possibly "future" elevators. If they are only building one track at this time... isn't there a way to punch a hole into the subway station to avoid going upstairs altogether? No shovel in the ground yet though, there is still time for this to be a gravel area with an old bus shelter to wait for the train.
I hope they move the track as far west as possible before building the platform. It would be pretty embarrassing to not fit two tracks under the bridge later on.