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You guys are aware that practically none of these Pokemon are going to get evos, right?
Every single Pokemon revealed so far not named Sylveon or Newtwo has been completely original. Now compare this to DP's pre-release, where evos and prevos were all over the place.
I think after going all out to make Gen 5 unrelated to the past, Game Freak realized they should continue doing that to keep things fresh and to only give focus to old Pokemon if there's a serious reason to (like the movie and Fairy type introduction).