Ostensibly, the differences will simply be dimensional. Platform and styling are said to be identical
http://www.autocar.co.uk/car-news/new-york-motor-show/all-new-jaguar-xf-arrive-2015With the XE expected to more than double Jaguar’s global sales next year to about 160,000 units, the firm is keen to roll out new models and build a range of cars that sit together to offer a more cohesive line-up.
As a result, the new XF will draw heavily on the styling of the XE. Insiders claim that the new XF will consequently have sharper, more dynamic body creases than today’s model and its proportions will be altered to follow the XE’s coupé-like silhouette, albeit with a less dramatic ‘cab-rear’ look.