No, the Johto and Sinnoh ones will be DS only. They'll both be minor hacks, meaning they'll have revised Gym & E4 teams, and some other stuff. The main thing is that I'm going to re-do the regional Pokedexes. The new Sinnoh Pokedex will have the exact same Pokemon as the Platinum Sinnoh Dex, except that it will be re-ordered to make more sense, meaning that Manaphy will be #210 instead of #151, and Palkia & Dialga are no longer #149 and #150, and will be #207 and #208, Giratina being #209.
The new Johto dex will have 210 Pokemon instead of 256, and will have more of an emphasis on 2nd Generation Pokemon. All related Pokemon are in, for instance, since Magby is a 2nd Generation Pokemon, it will be in the new Johto Dex, along with Magmar AND Magmortar. So that means 4th Gen evos to 2nd gen Pokemon will be in too, such as Gliscor.
I know it's possible, since it's A LOT easier to hack the Pokedex order in 4th Gen games. I've already tested it, and it works.
EDIT: I'm just wondering, but what program do you use to make midis?