It's likely they'll add a new model to the line up with a third row (like the Commander). The current Grand Cherokee and the Dodge Durango share the same platform, which is available with a third row. It's currently rumored that a Durango sized Jeep will be available in the next few years, with a lot of folks speculating the 'Grand Wagoneer' name plate will make a return or even the 'Cherokee Chief'.
His: '00 WJ 4.7 Limited- stock
Hers: '03 WJ 4.7 V8- IRO 3", 245/75/16 Duratracs