Update: here are the estimated weights of the JL and JLU Wrangler Unlimited
http://www.jlwranglerforums.com/forum/threads/jl-jlu-wrangler-weight-tow-capacity-max-payload.1440/
FCA's ad agency is terrific. Especially like the description:
"As Vikings seek new land and take on large expeditions in uncharted territories, they need the best tools known to mankind. There's tough and there's Viking tough."