Mario & Luigi: Paper Jam announced for 2016
2D and 3D worlds collide.
Mario & Luigi: Paper Jam will be the latest Mario RPG for 3DS.
It's due in spring 2016.
This mashup has the Paper Mario 2D characters meeting their 3D counterparts. As such, certain sections will be in 2D while others are in 3D.
It looks a little something like this: