I hope they just make X and Y and move on. It doesn't need a 3rd of the same game like Emerald and Platinum.
You mean Yellow, Crystal, Emerald, Leafgreen, and Platinum? Yeah, that never happens.
Since this is based on DNA and chromosomes, it should be version XY or a sequel.
Oh yeah I forgot about Yellow and Crystal. Leaf Green is pretty much the remake of Blue.
Still though they're all the same game with little of no change. Besides Yellow. Yellow is the only that has anything different out of Red/Blue/Yellow. In Crystal you can play as a girl, in Emerald you get Rayquaza, and in Platinum you get that one Pokemon, Garintina. Other than the legendaries you get, the game isn't much different than that.
They may be the same game (meaning the same region and similar if not the same stories), but there are a lot more differences than you think. Yellow may be the only one which has a lot of notable changes, but the other ones do too. Crystal has the Battle Tower and more music tracks (like the legendary beasts battle theme). Emerald introduced the battle frontier, battle tents, has a different PokéNav, includes both Team Aqua and Magma and Mystergy Gift. In Platinum more pokemon were obtainable (like the legendary birds of Kanto and the different forms of Rotum). On top of all this, the third game fixes glitches, changes sprites and locations, allows you to catch more legendaries and they have different Pokémon avaliable. They aren't exactly the same (just look at Bulbapedia for all the differences!) and that's why I was upset that we didn't get Pokémon Grey. They are improved versions of the others, which is why I will be waiting for Z version to add to my collection of Yellow, Emerald and Platinum. The third one is always the best.
Thank you for pointing that out. If they were to make Pokemon Z Version it would be much like how Pokemon Yellow, Crystal, Emerald, and Platinum were: Extra goodies, bug fixes, etc. It would practically be the same as X and Y, yet it would have additional content, as all 3rd games do. Also, since X and Y have legendary Pokemon shaped like the letters, Z would have the same, and since the legendary of X (Xerneas) is based on a land-based animal (Deer) and the legendary of Y (Yvelta) is based off a sky-based animal (Albatross), the Z legendary would have to be based on a sea-based creature and a name that started with Z, and of course take a Z shape. If Pokemon Z is to come into existence, why don't we guess what animal it would be based on? Also, if generation 3 is remade, I would love to see the edits they made, and even what they would name them! Storm Sapphire? That is for nintendo to decide.