There was speculation that because the original agreement did not include the iPad, Apple was under no obligation to give AT&T exclusivity on the iPad, and that they renegotiated the contract when the iPad was released. Such a renegotiation could have included an earlier end to exclusivity.
It will take another court case to confirm if that is true, since neither party comments on the terms of their agreement.
It will take another court case to confirm if that is true, since neither party comments on the terms of their agreement.