Generation IV Pokémon, introduced in Pokémon Diamond and Pearl, are likely coming soon to Pokémon Go. Pokémon’s Generation IV features a total of 107 Pokémon, including 14 pseudo-Legendary, Legendary, and Mythical Pokémon. As Gen IV’s release is not yet confirmed, we also don’t yet know just how many of these Pokémon will be added to Pokémon Go. However, it’s likely they’ll be released in multiple waves, adding between 20 and 50 Pokémon at a time, similar to previous generations.
In addition to an all-new roster of Pokémon including new starters Piplup, Turtwig, and Chimchar (and their final evolutions Empoleon, Torterra, and Infernape), Generation IV also introduced new evolutions of Pokémon from previous generations. It’s likely that many of these new forms will be added in future Pokémon Go Generation IV updates, so you'll want to get a head start on farming currently available, earlier evolutions to collect the candy you’ll need to Power Up and evolve.
The addition of Generation IV will also likely welcome new evolved forms of Eevee, including the Ice-type Glaceon and Grass-type Leafeon. The next Pokemon Community Day event, on Aug. 11 and 12, is spotlighting Eevee with increased spawns, so don't miss out on your chance to farm tons of candy so you're ready to obtain their new forms as soon as they're added.
Here's a list of all currently available Pokémon that feature evolved forms added in Generation IV.
List of Pokémon with Generation IV Evolutions
Rhyperior is the third and final evolution of Rhyhorn, evolving from Rhydon.
Mamoswine is the third and final evolution of Swinub, evolving from Piloswine.
Togekiss is the third and final evolution of Togepi, evolving from Togetic.
Tangrowth is the second and final evolution of Tangela.
Porygon-Z is the third and final evolution of Porygon, evolving from Porygon2.
Magnezone is the third and final evolution of Magnemite, evolving from Magneton.
Magmortar is the third and final evolution of Magby, evolving from Magmar.
Gallade is a third and final evolution of Ralts, evolving from male Kirlia.
Electivire is the third and final evolution of Elekid, evolving from Electabuzz.
Yanmega is the second and final evolution of Yanma.
Glaceon is the Ice-type final evolution of Eevee.
Leafeon is the Grass-type final evolution of Eevee.
Weavile is the second and final evolution of Sneasel.
Roserade is the third and final evolution of Budew, evolving from Roselia.
Gliscor is the second and final evolution of Gligar.
Honchkrow is the second and final evolution of Murkrow.
Mismagius is the second and final evolution of Misdreavus.
Lickilicky is the second and final evolution of Lickitung.
Ambipom is the second and final evolution of Aipom.
Dusknoir is the third and final evolution of Duskull, evolving from Dusclops.
Probopass is the second and final evolution of Nosepass.
Froslass is a second and final evolution of Snorunt, evolving from female Snorunt.
Evolutionary items we'll likely see in Generation IV updates
It’s worth noting that the vast majority of the Pokémon included in this list evolve through alternative means in main series. Primarily through use of evolutionary items. It’s likely that any necessary evolutionary items will be added to the selection randomly available at PokéStops, along with those currently in the game (such as Sun Stone or Metal Coat). Here's all of the evolutionary items required to obtain these Pokémon in mainline Pokémon games, many of which we'll likely see in Pokémon Go:
Dawn Stone: Required for evolving Froslass, Gallade
Dubious Disc: Required for evolving Required for Porygon-Z
Dusk Stone: Required for evolving Mismagius, Honchkrow
Electirizer: Required for evolving Required for Electivire
Magmarizer: Required for evolving Magmortar
Protector: Required for evolving Required for Rhyperior
Razor Claw: Required for evolving Weavile
Razor Fang: Required for evolving Gliscor
Reaper Cloth: Required for evolving Dusknoir
Shiny Stone: Required for evolving Roserade, Togekiss