Welcome to JeepGarage!!!
If you look on the main forums page you will see all the abbreviations for each jeep. ( ie. "Grand cherokee - WK2. discuss anything about the wk2 (2011) here"). So that means the new Jeep Grand Cherokee's 2011+ are WK2. You'll get the hang of it once you're on the forum more.
2012 Jeep Grand Cherokee Limited Maximum Steel Metallic
5.7L V8 HEMI, 4X4, 730 RHR, Panoramic Sunroof, Husky Floor Liners, SRT pedal kit + E-Brake, Red BT CC, Sharkfin antenna, Mopar CAI