From today's Gothamist:

Developer Bruce Ratner's Atlantic Yards project "cleared a major hurdle," according to the Daily News,
by selling $511 million in tax-free bonds for the arena's financing
yesterday. Apparently the bonds were selling like hotcakes—the NY Times says
they were sold out in two hours, "Indeed, the demand for the bonds from
institutional investors far outstripped what was available and belied
the project’s tortured history and court challenges."