The Jaguar XJ was introduced in 2009, so the company is preparing a minor facelift for their flagship sedan.
Caught undergoing testing near the Arctic Circle, the prototype has been equipped with modified bumpers and a revised grille. There doesn't appear to be any other changes but we wouldn't be surprised if the production model had some additional tweaks.
Engine options will likely carryover but our spy suggests the cold weather testing could indicate the company is working on at least one new or updated engine. There's no word on what it could be but we'll likely find out later this year.