I wish I had the link, but I read something earlier that said it will not have UMA at rollout although it may be added later. The UMA if it comes will be software based and will more akin to what T-Mobile has on some of their Android phones. I wouldn't hold my breath on it, especially since it is quite likely that once ATT gains control of T-Mobile you can kiss UMA good-bye even on the phones it works with now. Probably not a lot of effort going into making something work that is bound for the ATT executioners sword anyway.