Most mysteriously, they are PS4 Slim bundles, and not PS4 Pro bundles, however…
Arguably the best, most exciting, most promising looking game in Sony’s arsenal of upcoming games appears to be Horizon: Zero Dawn, the open world action RPG developed by Guerrilla Games, who before this were best known for making Killzone.
For Sony, Horizon will be a major title, and one that they will apparently be pushing quite majorly- so it shouldn’t come as a surprise then that a Horizon PS4 bundle has been announced for Europe. In fact, the bundle’s existence isn’t the major news here, as much as the fact that it will include a PS4 Slim, as opposed to a PS4 Pro, is- especially since Horizon is meant to be one of the flagship games that Sony are promoting the PS4 Pro’s enhanced power with.
It is also confusing that so far, the bundle has only been announced for Europe- hopefully, Sony will be bringing it over to North America soon, too. Make the new game as attractive as you can for prospective buyers.