You know, as any other languages , Farsi has formal and informal words. That's why you hear many versions with different words! We say: هفته ی آینده میبینمت (hafteye ayande mibinamet) هفته ی آینده میبینمتون (hafteye ayande mibinametoon)''more formal'' هفته ی بعد میبینمت (hafteye ba'd mibinamet) هفته ی بعد میبینمتون (hafteye ba'd mibinametoon) ''formal''

we say "hafteye digar mibinamet" هفته دیگر میبینمت. or "hafteye ayande mibinamet" هفته آینده میبینمت.

You are right! We have many versions for a sentence in Farsi. "hafteye ba'd mibinamet" It is another version for your sentence :D

If you talk to your friend you say:هفته دیگه می بینمت! If you talk to someone who is older than you(need to be formal):هفته دیگه(آینده) می بینمتون.