I imagine it'll be support for future smaller-scale titles they have in the pipeline. Maybe their next console Trackmania, or the next Ubi Art game. Maybe port Grow Up/Grow Home. Or it could be something developed specifically for the hardware, akin to Rabbids.
Either that or there may be a third party Direct after Splatoon 2 releases. We know there was a slot for a new Direct found recently, that usually means there will be one happening within the next 1-3 weeks I believe.
I know that other people have replied to this, but I wanted to add that it was nearly a decade and a half ago that Nintendo (and Microsoft) allowed BMX XXX to have nudity on their platforms, and Sony was the one that required the offending content to be censored. I'm not sure that Nintendo has been particularly strict about this sort of thing since the 1990s.