Also Yifan Lu noted that his exploit is nothing compared to the current work done on 3ds and that the chances we get "something" on 3ds 1st are higher.I'm no hacker but let me help you
The exploit is done, neimod says it was an unmodified 3DS, so no soldering needed, My strongest bet righ now would be twigliht hack-like thing.
Also, people with access to this exploit can be counted on fingers of one hand (most probably), and it's a cart based game, so it can't be replaced so easily like the PSP games on Vita.
I bet the situation here (the 3DS scene) is similair to the situation on the Vita scene. Yifan Lu said that he has an Usermode Vita Exploit (UVLoader) but he won't release it, cause that would put it to waste. There's no way of writing homebrews, no libs to compile code with. Same goes with 3DS as of now
all we know for the exploit is that we have to inject the save file(.sav) it can be done by a ds/ds lite by the 3dSavexplorer(not sure about the name) or a r4 save dongle or open the cart and do some soldering to the last 2pins(not sure too..)
BUT I bet that we will get something from ozmodchips neimod and yellows8 seems to be close with them so i smell a fpga based* peripheral** ready for the exploit \o/
Edit:So many errors in my text.... need to refresh my english xD