Auto-Renewing Subscription Price Increase During Trial

We have an iOS App that offers auto-renewable subscription. The subscription comes with a 1 Week Free Trial.

If we increase the price of the subscription (say from $4.99 to $5.99) and choose to keep the existing subscribers at the old price ($4.99) what happens to users who signed up for the trial at the old price of $4.99 but their trial hasn't completed. Will these users pay $4.99 or $5.99 at the end of the trial?


Hope someone from Apple can clarify this.


Thanks