For all subscribers opting this plan, tariff benefits will be available for 84 days on all recharge vouchers purchased till the plan is available for subscription,thereafter customer has to recharge with Rs. 399 every 28 days.On all recharges with this PV from 12th October 2017 onwards , the subscribers will be provided with 8 vouchers of Rs.50/- each, each voucher will be redeemable at face value on subsequent Jio recharges of MRP Rs. 300/- or above with effect from 15th November 2017. Only one voucher can be redeemed on a single recharge.
Seems like this is not a Diwali only offer