Yeah this press release I saw a couple of days ago mentions that the Harborside Plaza 8 & 9 (sites 104 & 105) would have 2,000 units, and it also has similar leasing numbers for Urby (286 leased, or 38%, as of May 18):
http://rew-online.com/2017/05/18/mac...-unusual-urby/
Where did you get the news about Harborside 4? Very cool and hope it happens.
Harborside could be a vibrant and bustling area of the city one day, as long as they do good pedestrian-oriented planning.