There has been rumors that B6 has been looking into obtaining A319's and A321's which may reach the islands.

However, there are two things that make me hesitant that these new birds will bearing the blue any time real soon:

1) Current aircraft orders with the A320 and the E190 are in a constant slowed down status or keep being deferred. Why take new birds on when you don't have places/needs for the one currently ordered?

2) Even if the new birds come online, I think you'll see them hit high demand routes before you see them on new routes or at new stations. (i.e. JFK-SDQ)