At Wikipedia, the change has already been made. Barclays Center is listed as the Islanders’ home arena.
By virtue of a Game 7 loss Monday night to the Capitals, the Islanders were reunited with their basketball stepbrother in Brooklyn — 38 years after the New York Nets left Nassau Coliseum to play in Piscataway, New Jersey. Now it’s the Islanders who are the low guy on the home-arena totem pole; the low man on the bunk bed.
Two teams known to play second fiddle to their New York counterparts — the Knicks and Rangers — the Nets and Islanders have both provided unexpected excitement this season.