I don't trust the oral assurances of anyone. Even if Sunil Mittal called me up personally and assured me of no FUP, I would not rely on it (unless I record it). That's why for people opting for this plan, I recommend seeing the paperwork, and if there is any mention of FUP, you should cut it or not opt for the plan. You can also mention wherever you sign for the plan that you agree subject to the condition that FUP is not applied to the plan.(though I do believe every time they have upgraded my plan there has been no paperwork for the same oh well, I guess I will have to insist this time).