But what could it be?

PlatinumGames has been a long-time supporter of Nintendo and its consoles, and the company was confirmed as a Switch developer back when the console was first announced.

We've not yet heard what the studio is producing for Switch but head producer Atsushi Inaba has mentioned to Japanese magazine Famitsu that it will be "interesting":

How’s the compatibility with Platinum Games?

I think it’s good. We’ve also already declared we’re going to participate. During the announcement event of Nintendo Switch, there’s the Platinum Games logo showing up secretly.

Is something happening?

We’re creating it, you know. I think it’s going to be interesting.

It's not much to go on, but it should be enough to have fans dreaming. Will Platinum create a new IP for the Switch, or could Bayonetta 3 actually be a thing? Maybe it has been commissioned by Nintendo to work on one of its existing series, like it did with Star Fox Zero? We're sure you've got plenty of ideas, so let loose in the comments section below.

[source japanesenintendo.com]