Nokia

I am looking for a NEW nokia phone(s) for use on the cingular svc. Nokia 7270,6170, and 6260. Do you know if these are going to be released for the US market? If so when and will PTT work? I have been a long time CellularOne/ATT/Cingular, (etc...LOL) customer (10+ years)I have been MOSTLY happy with the majority of service, but also SOME bad...but OH well that's happens with a BIG company. I have been a LOYAL Nokia fan and have purchased higher/mid range phones only. This request is ONLY for help on purchasing/info on a NEW phone, and nothing more. Hopefully someone can steer me to a new phone(s)that are GREAT. I am a newbie to this form and hope ALL the haters out they don't try and slam me!!!Thanx for your help in advance.