With the direction of the re-design of the America and the Speedy (and even though I ride a Speedmaster, I miss the spokes on the America), and how they are becoming the same bike, that one of them may become the new larger cruiser.
However, because of the distinct ergonomics of both bikes, I think it would be in Triumphs best interest to keep both teh Speedy and America separate bikes, but with the same frame and motor.
I really hope that if Triumph does come out with a new cruiser, they resurect one of the old classic names like maybe Hurricane.
Soren