Here are some huckfeldt pictures of the supposed refresh coming soon. Some say its going to occur at the end of this year, and come out in dealerships early next. I think that sounds a little early for me, considering the E60 (released earlier then the X3) hasn't been refreshed, and nor has the E63 (released at the same time as the X3) hasn't been refreshed either...
Some argue that the E83 will get an earlier refresh then the E60 and E63, because of the fact that BMW wants to make changes to the E83 engine line-up and look at the same time as BMW releases the new E70... hmm..
Anywho, here are the pics... Notice the horizontal lines in the rear taillights (in keeping with the new BMW lighting sheme, E90, E63, E65, refreshed E85) and the new lower plastic bumpers (in keeping with the new E70). Autocar I believe has a picture of a mule where you can clearly see the fiber optic horizontal lights - thats floating somewhere around the web...
edit: autocar picture is here:
http://carspyshots.net/zerothread?id=13687&page=3