Barclays Center released information regarding a "major announcement" at 1 P.M. today, and it appears that announcement is that the New York Islanders, who currently play on Long Island, will join the Nets in Brooklyn and play their home games in Barclays Center in 2015.
From the NY Post:
Developer Bruce Ratner has scored a major goal by landing the Islanders ice hockey team for his Barclay's arena in downtown Brooklyn, sources said.
The announcement was expected at a press conference this afternoon with Ratner, Mayor Bloomberg, Islanders owner Charles Wang, National Hockey League Commissioner Gary Bettman and Brooklyn Borough President Marty Markowitz.
Also: the NHL is currently locked out.