Callum is leaving to "pursue other design projects", and will be replaced by current creative design director Julian Thomson. Callum will continue to work with Jaguar as a design consultant, however. 

Callum has been responsible for many standout designs over the year, but this original Jaguar F-Type, cancelled 29 years ago, might be one of the most intriguing, since he didn't design it but was tasked with making it into something else. A few years ago Callum told Andrew Frankel the real story behind it: