Well, I'm not saying its Twilight Town OR Traverse Town. There is solid proof that it could be either one of them.
The level slightly resmembles Twilight Town. We have seen screenshots of Twilight Town. It certainly looks like it. We haven't seen ANY thing regarding Traverse Town. Yet, let us not forget the Buena Vista website said all worlds are returning( They were right about Lion King and Steamboat Willie and you all denied it, so shut up) All of the returning worlds have been modified since the original version. So there is a solid chance it may be Traverse Town as well.