^^^ they're referring to the old "Wacker Plaza" proposal right?
here's the old rendering for reference:
what confuses me is that the crain's article states that the new scheme calls for a larger building, yet the old scheme was supposedly 34 floors and 900,000 sq. ft. acording to emporis, and this new design is only 31 floors with 865,000 sq. ft. according to the crain's article. sounds to me like the project was downsized, not increased.