Do you think we will see any Splatoon spin-offs at E3?

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It's quite obvious that Splatoon has become one of Nintendo's major franchises now. And (without any research) it's my assumption that Nintendo has always done spin offs of their main franchises. Mario, Animal Crossing, Metroid, Fire Emblem, Zelda etc.

I wouldn't say it's reaching to say Nintendo will do the same for Splatoon someday and give it a spinoff. I wanna know if y'all think a reveal could happen this year? Or is that something more for next year because Nintendo has the Octo-Expansion coming out this summer, so they wouldn't wanna advertise that and a spin-off game at the same time.

What type of spinoff could they do for the series do you think?