When I say they announced a new Pokemon, that’s literally what they did. They announced it…and that’s all. They didn’t go into how you evolve your Eevee into Sylveon, or even the new pokemon’s type. They basically just said, “here you go!” Even so, it’s hard to complain, as fans like myself tend to get excited about the little things like this.
They did, however, send a bunch of images, a graphic, and even a new trailer (above) for us all to enjoy.