The Jeep Grand Cherokee is facing mild updates and a short 2013 model year because Jeep wants to get the thoroughly breathed-on 2014 model into buyers' driveways. Our spy photographers caught a parade of the 2014 models with swirly wrapping covering a tweaked front end sporting narrower upper and lower grilles, a new fog light treatment and perhaps a bit more curvature overall. The interior was masked off, but a larger touchscreen is expected to grace the center console.Among the expected new options are a 241-horsepower, 406-pound-foot, 3.0-liter diesel V6 that European Grand Cherokee buyers have been enjoying for some time now, as well as a ZF eight-speed automatic that's likely meant to partner with the Pentastar V6. Although the changes we know of so far might not seem to be worth all the hubbub, they should provide measurable added refinement to an already-polished vehicle that is still selling very well We expect to see it at this January's Detroit Auto Show , and production is predicted to begin in May 2013.