It appears that Evo managed to sneak a Jaguar F-type V6 out to the M4 launch - Full M4 review and F-type twin test in this month's issue!
"I switch cars and head off in the Jaguar for what turns out to be one of the most surprising drives I think I've ever had. Flitting down the same bit of road in the F-type, it feels like I've jumped into an Elise. That last sentence sounds like a ridiculous hyperbole but I'm really not exaggerating. The whole car feels so light, responsive and direct that you'd swear it was about half the weight and half the size of the BMW. I checked afterwards and the F-type is actually slightly wider and about 60kg heavier..., yet it feels the opposite and then some."
Not what I was hoping/expecting to read!