The registry behind the domain, Generation XYZ , specifically targets the "next generation of internet users," including startups and young tech enthusiasts.
If you are looking for a feature within the Pokémon XYZ anime or Generation 6 (XY) games that starts with "H," you might be thinking of the Holo Caster . This was a feature of the Player Search System (PSS) that allowed players to receive news bulletins and messages from characters like Professor Sycamore. H Gen Xyz