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- Zone 4" SA lift, JKS BPE's, 242HD Swap, 18" JK Sahara 'Phone Dial' wheels, 255/70/18 Bridgestone Dueler A/T's
Hers: '03 WJ 4.7 Laredo- IRO 3", 245/75/16 Duratracs, Bilstein Shocks, JKS TB w/KOR Bushings, Rusty's A-Arm Spacer, CORE4x4 Adjustable Front Control Arms, Dynomax Exhaust, RB1 Nav -Coming Soon- Overland Rock Rails