Annual subscribers may get the benefit; but those on a monthly basis renewal will have to bear the new rates, I think.
Even with print magazines, old subscription remains valid till expiry; new rates for renewal and new subscribers.
Some magazines, (I remember Ananda vikadan) reduced the balance subscription period taking into account the enhanced prices.
I called the CC. They said the New rates will be applicable to the Existing users only after 6 months from today.. So for 6 Months, we are charged Rs.40 Per month...