Will unlimited data plans be grandfathered in for the iPhone 4S?

Yes, unlimited data is sticking around, for now.

If you're a customer that has been on the unlimited data plan since it's inception, we now know you will have the option to select the unlimited data plan when you commit to a new 2-year agreement at the time of purchasing or pre-ordering your iPhone 4S.

The unlimited data plan will cost $30 per month.