Historically, the Salon only accepted Realist paintings. The developer has stated that more, different exhibitions will come later. This is still in alpha.
"The King is dead! Long live the King!" is a phrase traditionally said when a person takes the throne in several countries. I think that's what the developer is referencing.
 "Shave Time!"){kind=icon}
 "Avant-Garde"){kind=icon}
 "Dibbles 3: Desert Despair"){kind=icon}