The folks at Hudson River Park Trust told me the other day that the "ribbon cutting" for this section is dependent upon the schedules of the Mayor & others. They need to coordinate so all can be on hand to share in the glory -- and, of course, the photo op.
Hence the lack of a hard date.
Right now the HRPT website says says the opening will be "later in 2008".
But the other day a fellow at the edge of the park wearing a very nifty HRP polo shirt and driving a HRP cart claimed that it would be sometime on or around July 22 ...