Are there any newer AT&T phones that allow you to assign personalized ringtones to different contacts for text message ringers?

Currently I have an iPhone 4 and I can customize text ringers using only the limited stock sounds that come on the phone. However, if I jailbreak my phone, I am able to assign real music ringtones as text ringers for each contact. However having to re-jailbreak after every update gets really old.

Does AT&T have any newer style phones that allow this function?

Thanks in advance for any help.