yeah they showed it at the Europe Celebration - before that the plan was to bring out ALL 6 movies in 3D, one every year, but that didn't work out as we saw ...
even the thought of cramming 2 or more in one year was dropped, and then Lucasfilm went over to Disney and now "3D" is on complete hold - not just the release of Episode1 3D on bluray
maybe if Disney would focus on their older productions (eg: TRON), that they would start marketing the other stuff in 3D ...