DPing..
I think I know what Quinn is getting on, because the Fire Emblem site from Nintendo, Fire Emblem World; is back online after a period of time. And from what it seems, it has a layout similar to that of the Smash site.
I don't think it means much, but..it is something to look at.
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That said, to talk for a second..they said ten game reveals. And, additional updates to games coming out (or updates for games already out). If they do Fire Emblem: Three Houses, that's not to say we couldn't see a proper reveal of Metroid Prime 4 to couple with it.