I am still on my parents family plan with AT&T and we have the unlimited $30 family texting plan included. I was wondering how much will the data cost for an iPhone (I am planning on purchasing one in June, the new one if one comes out, the 3Gs if not). Is the data plan $30 or can I use the unlimited family data plan for $10 or the other data plan which costs $15? Also, what are the chances of a new iPhone in June?