Didn't the original announcement about these Pokemon games actually say they were going to be on the DS, sparking a plethora of conversation about how nintendo had never had two successive generations on the same system (which is actually untrue because, though Gold and Silver were optimized and intended for the Gameboy Color, they were also usable on the super Gameboy)?
Also, the original announcement mentioned something about how all of the previous regions were to be reborn or something, so maybe they actually are going to link them all. If I can get a Charmander without having to beat the rest of the game (which I am led to believe I can do in HeartGold, which is easily the best pokemon game ever) I will officially declare that Generation 5 is the best generation of pokemon ever. I hate traveling around the world without a Charmander/Charmeleon/Charizard, though the Cyndaquil evolutionary tree is a decent substitute, and as long as I have a trusty Dratini eventually I'm fiune, I guess. But, please, give me a Charmander!