Future tests for SN Ia evolution. Blue contours show the 1σ confidence levels derived from errors on the equation of state parameter (w0) of quiessence models. Light green regions are the 1σ confidence levels derived from errors on w0 and wa of CPL models. Gray regions denote a plausible range for SN Ia evolution effects, following Dominguez et al. (2001) and Riess & Livio (2006) and assuming dmB/dMMS ~ 0.03.