Quite a few high performance vehicles coming out in 2015. The new dual electric motor Tesla will be a very high performance 4 door as well, and of course there are others like BMW and MB coming out with some pretty high performance 4 doors. None will touch the new Dodge SRT in terms of $/performance numbers, but that Telsa will come close IMO.
Chev has their Z06 and new track versions of the Camaro.
Ford has the fantastic new Mustangs and the recently announced new Shelby GT350 and the 350R, as well as the GT500 that was been announced.
Dodge and the SRT team has the above car and numerous others.
All of the Big 3 have a high performance truck coming around as well, Ford has already released info on their new Raptor.
It's a great time to be a gear head, so many great new vehicles, the Ford GT that everyone has talked about here already, plus the new Acura/Honda NSX looks very interesting as well. Our Nissan GTR is 5 years+ old now, and our Duramax is nearing 4, and both will likely get replaced this spring, it's very tough to decide which with. The missus really wants the new Alfa 4C for "her" performance car, but it's pretty small IMO, but very nifty none the less. I'd prefer either one of the new US made cars, either the Mustang/Vette/SRT of some type, but I'm virtually certain that our new truck won't be another diesel, and will be the new Raptor with the Ecoboost boosted motor.