I just got an update! The information in this thread is wrong.
The next LE is a called a Luna building that can only be placed on the moon. We can't see it because we look down on our base, not up. But it's there...somewhere.
Hey guys, just so that you are informed, the new LE building is now available, just make sure you are onthe latest data set (mw_20140211_3).
Thanks for all of your patience!!