Just to close off this old thread: the electro-hydraulic power steering for the 2011 WK2 was once slated for introduction to the assembly line about mid-Nov. 2010 (ref. WK2 Jeeps and Allpar web sites back in mid-to-Fall 2010). Then nothing more was heard, as this thread indicates.
Now we know that the electro-hydraulic steering will be included in the 2012 model year.
The 2011 WK2 has hydraulic power steering only. No big deal. It works well for me.
Edit: Turns out the electric power steering pump DID make it into some (but not all) 2011 models, a bit later than expected. Check this thread for more info: http://jeepgarage.org/showthread.php?t=24787