Not sure if you still need/want this, but this is all I could find...
The 2011 Jeep Liberty adds these standard features: cruise control, Jeep-branded steering wheel, upgraded interior trim, and an optional navigation system with traffic, fuel prices, and weather updates. The entry-level Sport is expected to be the big seller, claiming nearly three quarters of sales (other lines are Limited and Renegade).
2010 Jeep Liberty got active head restraints, interactive Decel Fuel Shut Off (iDFSO), Fuel-Saver with “ECO” lamp indicator in cluster, power heated manual folding mirrors (Sport model), standard air filtration system, standard premium seat trim with stain-repel seat fabric and front-passenger fold-flat seat, and standard larger floor mats. Limited got standard front-passenger express-up power window, Uconnect™ Phone, leather, heated front seats, and power driver and passenger seats with manual lumbar control. A new graystone paint was added.
http://www.allpar.com/trucks/jeep/liberty-2008.html