>>35587825Pikachu and Eevee are two of the most popular Pokemon. That's a much simpler and more reasonable explanation for why they're together on this wallpaper, rather than believing it's part of some secret conspiracy to hint at new games.
Besides, I think this wallpaper has been around for a while, and I doubt Nintendo or GF or whoever would be secretly hinting at future games for such a long time beforehand.