Unless you specifically worked something out with your insurance company, they will be replacing it with the same year model parts. The fact that the S2000 has been discontinued is irrelevant to whether you will have newer year model parts installed on your car.
Chances are that the insurance company, even if you requested it would probably not install newer stuff on the car anyway. Prices are normally higher (even if it is marginal) for newer parts. Furthermore, the idea is to get your car back as close to it's pre-collision form. Not upgrading/updating parts.