Let's Go Pikachu! and Eevee! are finally out as of a couple of days ago.
All of the version exclusives have been revealed:
Let's Go Pikachu! exclusives:-Scyther
-Grimer/Muk
-Oddish/Gloom/Vileplume
-Sandshrew/Sandslash
-Growlithe/Arcanine
-Mankey/Primeape
-ingame trade Persian
-ingame trade Alolan Sandshrew
-ingame trade Alolan Grimer
Let's Go Eevee! exclusives:-Pinsir
-Koffing/Weezing
-Bellsprout/Weepinbell/Victreebel
-Ekans/Arbok
-Meowth/Persian
-Vulpix/Ninetales
-ingame trade Arcanine
-ingame trade Alolan Meowth
-ingame trade Alolan Vulpix
-Your starter Pikachu and Eevee won't evolve, but they have greatly increased stats to make them around par with final evolutions, and they have unique moves of various types. They can also be customized with different haircuts and tweak their look. Wild Pikachu and Eevee are still available to capture.
-Your trainer can wear different outfits and your partner Pikachu/Eevee will wear the same outfit to match.
-Bulbasaur, Charmander and Squirtle are still available to be given out by NPC trainers as they were in Yellow, and are also rarely available in the wild.
-It will also be possible to rematch Gym Leaders as well as the Elite 4 + Champion after beating the game, plus a couple of other familiar high level trainers related to Kanto will be available to fight. You will have to defeat at least 6 Master Trainers to get a certain one of these familiar trainers to appear at Indigo Plateau.
-Master Trainer battles are 1-on-1 battles where you have to conquer the other trainer using the same Pokemon as they use.
-Most Pokemon are caught Go-style, but with certain Pokemon like the legendary birds, you have 5 minutes to defeat them in a battle before it moves to the Go-capture screen.
-The EV system of boosting stats isn't available, but you can boost stats with Candy instead. Candy is obtained by releasing certain Pokemon, and you can also can get candy by capturing Pokemon as well as completing Play Yard mini-games in Pokemon Go Park.
-Pokemon abilities are unavailable in the game but they're still coded in (even for the new Pokemon listed below) so it seems those will still be available in the next Pokemon game in 2019.
-Mega Evolutions are available but they are all post-game except for Venusaur/Charizard/Blastoise which are gotten after Cinnabar Gym.
-Alola Pokemon are also available via ingame trades. You have to trade a Kanto version of the same Pokemon for them - like a Grimer for an Alolan Grimer. You can repeat this trade as many times as you want to get multiples of an Alolan Pokemon.
Alolan Pokemon Trade Locations:Alolan Rattata-Cerulean City
Alolan Geodude-Vermillion City
Alolan Diglett-Lavender Town
Alolan Sandshrew(p)/Vulpix(e)-Celadon City
Alolan Raichu-Saffron City
Alolan Marowak-Fuschia City
Alolan Grimer(p)/Meowth(e)-Cinnabar Island
Alolan Exeggutor-Indigo Plateau
-For a limited time, when you purchase a Poke Ball Plus, it comes with a Mew. This Mew is the only way you can get a Mew in the Pokemon Let's Go Pikachu & Eevee games.
Meltan and its evolution
Melmetal are the two new featured Mythical Pokemon of the game and are exclusive to those who have Pokemon Go. They are both
Steel type. Meltan's ability is Magnet Pull and Melmetal's ability is Iron Fist. It's said they are made of liquid metal and can corrode & absorb metal as well.
To acquire Meltan, first you must transfer Pokemon from Pokemon Go to Pokemon Let's Go Pikachu/Eevee, which will give you a Mystery Box. Open the Mystery Box to cause Meltan to start appearing in Go which you then can catch.
To evolve Meltan into Melmetal, it needs to be given 400 Meltan Candy in Pokemon Go. You can get Meltan Candy by catching or transferring Meltan, walking with Meltan as your buddy Pokemon, sending it to Pokemon Let's Go, and using Rare Candy. Melmetal also has the powerful exclusive Steel-type move
Double Iron Bash.