Withe the 3D Mario collection likely to be a September or November drop, Pikmin 3 in October, and potentially 3D World as well, that doesn't leave much room for a new unannounced first party game.
You could have said the same thing last year. With Links Awakening+Switch Lite in Sept, Luigis Mansion in Oct and Pokemon in Nov, that doesn't leave much room for a new first party game.
Despite that we got Ring Fit released in Oct, like a month after being announced.
When the herd loses its way, the shepard must kill the bull that leads them astray.