Toyota and Honda have that policy that the applicable price will be the one that is at the time of the delivery so if prices increase before your car is delivered you will have to pay the extra amount.
Suzuki has better policy that the price is set at the time of booking and if prices are increased later you wont get affected as long as its a price increase not any additional tax by the government.
So as far as i remember there was no FED around the time you booked the car but now there is so you may have to pay that FED. Calculated on your invoice price not the new one. You will have to pay extra FED but not the price increase