Several variants are already produced above the fighter’s lifespan. These have included the T-45A, that's a two-seat variant also used by the US Marines, as well as the T-45C, an upgraded Variation which has a glass cockpit and other augments, which currently serves to be a product for T-45s even https://lhcathome.cern.ch/lhcathome/show_user.php?userid=1942703