Emily Rogers made a new blog post about the NX's software output

[Frogger]

Hiku said:

She didn't say that Nintendo's own published games would in a year amount to more than what they published on the WiiU during it's whole lifetime. She said that the software output in general for the first year would. This includes third parties.
Nintendo's new strategy for releasing games (faster?) will likely contribute to that. And that it over the course of some years should amount to more Nintendo published games being released for NX than for any other single console in Nintendo's history.

spemanig said:

That's the tweet where she clarifies she's talking about first party.