This is a vita related news article, but they let this one slip:
"Are you considering to make games for other platforms maybe 3DS, as well?
We would like to focus making games for smartphones as well as portable devices. Right now, the current development status there are a lot more games for the mobile platform.
I can’t tell you the title just yet, but we are developing a title for the 3DS."
Well, the more the merrier.