To make things simpler, Yaris (EUDM) is synonimous to Echo (USDM) and Vitz (JDM). The Vios, while sharing many components, is somewhat a different car. There was a rumor that the Vios itself will be brought Stateside and rebadged as Echo, but it looks like it's not true after all with the advent of the new Yaris/Echo. The Vios remains marketed within ASEAN only, more or less.