What is going on here? Nobody knows for sure.
According to w42st.com (From Lumber Yard to Luxury Living: New Residential Development Moves Above Ground) it will look like this and have 98 units:
According to yimby (Foundation Underway at 611 Eleventh Avenue in Hell's Kitchen, Manhattan - New York YIMBY) it will look like this and have 188 units:
Construction photos from April 10, 2025: