Maybe, but as a matter of cost savings, I believe there are strong arguments in favor of introducing the new car at some point in the middle of 2021 if possible. As I understand it, there are two big cost benefits from the Gen 7 car. First, each car built will cost less because of the vastly higher single source spec content. And second, a dramatic reduction in the size of the fleet, also because of the higher single source spec content. This means that one design will be used for all 36 races in terms of body and chassis... quite the opposite of current practices among the larger teams.
Roger Penske projected that the current fleet of 15-20 cars per entry could be reduced to 5-6 cars per entry. So that would create a powerful disincentive to wait until February 2022 to roll out the Gen 7 car.