I went to the grand opening for Alcove's leasing office yesterday. A leasing agent said the official move-in date is May 1, but that some early birds might be able to move into lower floors a week or two earlier.
The leasing office is at 517 Church, one of the retail spaces in the bottom of the 505 building. They have renderings scrolling on a TV and VR headsets for virtual walkthroughs. I'm impressed with some of the tech features they boasted: digital keys that can be sent to a visiting friend or to a dogwalker/housekeeper, automated shades that are controllable with an app… it will be a cool place to live.