It's Atlantic Yards down the memory hole.
The railyard most assuredly has not been platformed, though preliminary work is ongoing. It's the Vanderbilt Yard, not Atlantic Yards, since that was a brand name for a development, no Pacific Park.
And it's not really Forest City's Pacific Park development, but Greenland Forest City Partners' project.
Note the updated article, which does not acknowledge a correction.
I get that there was an agreement to build a platform, yet unfulfilled. But inanimate objects like rail yards can't enter into agreements.