I'm sure the internal SD reader will be supported soon. They just know very little about hardware at this stage, so porting the SD Gecko code from GameCube was a lot easier. Before any 'real' homebrew is released, I'm sure we'll see an updater loader.
The creators of the hack won't do it, but I'm sure a third party source will eventually develope it. (Though I'm sure you won't be able to find it here whenever it does become available)
Small steps at a time guys, I'm overly excited about this because it works on my wii, it's just a matter of waiting for them to make an internal SD loader so I don't need any outside sources except my SD card.