It will take a very long time before the regular servers get to the Hero World stage. We can test the Hero World concurrently with the regular servers running the World Wonder stage. I understand what your saying, but we need to get this part fixed so it can be released before we open up an entirely new can of worms, and delay any further. Besides going to fast here will just allow us to miss bugs and if there are too many after the release that will upset the player base.
There has been a rule change. The german text translates into something like this:
Your Alliance can't build any further World Wonders. Your alliance already has each of the possible 7 World Wonders under construction.
There can be an unlimited amount of World Wonders under construction. However, an alliance can have each Wonder under construction only once.