The garage site has had 8 proposals submitted for it that were just released. Slideshow at Banker and Tradesman:
http://www.bankerandtradesman.com/gallery/winthrop/
4/14/2015
Millennium + Handel Architects residential and office 750 ft
Fallon Co. = HOK two residential buildings 700 ft
HYM Investments + Elkus Manifredi residential 780 ft.
Lend Lease Dev. and Hudson Group + Graziani and Corazza condos, rentals, hotels, office, retail 750 ft. Appears to be similar concept to the Aura in Toronto.
Steve Belkin Trans National + CBT offices, residential, retail 740 ft.
Accordia Partners' Kirk Sykes and CV Properties' Dick Galvin + SHoP and Hacin hotel/condos 750 ft.
Trinity Financial + TAT 51 story hotel, apartments, condo
second Trinity rendering:
Lincoln Property Co. 47 story tower with 1.4 msf hotel, office, residential. No architect selected.