A CFW for the new 3DS released recently, the NTR CFW 2.0. For now, it runs only on JAP models and can't load pirated cartridges, but this will change in future releases.
Until now can run multi region games and allows to take photos ingame. More functions can be added with plugins.
Info
-Is Region Free.
-Contains a CFW Menu, which enabled by pressing X+Y buttons either in game or in Home Menu.
-It supports Plugins. So anyone can release plugins with more functions.
Needed:
A JAP model of the new 3DS with firmware 8.1.0/9.1.0/9.2.0.
The Cubic Ninja game (original).
Read more by visiting the link above.