Sept 21 at Flyers, Allentown PA
Sept 21 Flyers-Barclay's Center
Sept 23 Devils-Barclays Center
Sept. 25 at Devils-Prudential Center
Sept 25 at Flyers-Wells Fargo Center
Sept 26 at Carolina-Halifax
Sept 28 Captals-Barclay's Center
Oct 4 Capitals-Verizon Center
Boston, like the Islanders have had other teams announce preseason games against them, it's possible they play Islanders in Boston/Webster Bank Arena, but the already the Islanders preseason (above) surpases that of several other teams so this could be it.
Nashville, who played the Islanders last preseason has also yet to announce it's schedule.