It was either taken off the market temporarily or was sold. You can search for all available vehicles here.
Model info:
The Jaguar XK series is a line of grand tourer cars produced by Jaguar from 1996 to 2014. The series includes the XK8 and XKR models, which were available as a coupe or convertible. The Jaguar XK series was designed to be a luxurious and sporty car, featuring advanced technologies and powerful engines. The most recent model was the Jaguar XK in 2014, which marked the end of the XK series.