The only reason that Nintendo would want to quadruple first party output is if third party wasn't on board. Otherwise, there is a much much higher risk of franchise fatigue with their iconic heroes. It would be reasonable to assume that she's talking fluff, or that we will have yet another Nintendo console with minimal third party support.

Edit - given the circumstances, I'm leaning toward her over exaggerating. I suppose a third option would be Nintendo merely seeking to rev up their creative juices and begin a new IP campaign.

This blog post is a follow up to a tweet (actually two, but many never saw the first one) specifically referring to Nintendo published games. She said that she would write this blog to explain what she meant.

So she is talking about Nintendo output alone here, though it's fair that you wouldn't know if you haven't been following this.

Considering how quick 3rd parties abandoned the WiiU after launch, you'd think Nintendo needs a fast 1st party schedule as a failsafe.Also, I'm sure they'll try more IPs, trying to replicate the Splatoon phenomenon.

I actually just updated my comment to reflect your last sentence. 

The problem with the fail safe argument is that they risk driving their key franchises into the ground, or if we choose the "bag of new IP", then there's a real possibility that the quality that's synonymous with Nintendo takes a dive as developers are spread thin/exhausted.

Nintendo didn't even try to retain them. Once third-party companies started to run away Nintendo just let the Wii U fade away into obscurity rather than try to get the big hitters on their system.

For example, a Minecraft port didn't hit the Wii U until December 2015. That's utterly ridiculous. If Nintendo had funded a quality, comprehensive Minecraft port in 2012 at launch it would have been huge.

Third-party companies are reasonable. Nintendo doesn't have to literally fund the entire development and marketing cost of the port for them to make it. If they just helped out a little bit they would think the ROI would be worth it. The issue is Nintendo literally didn't care in the slightest that GTA, Call of Duty, Battlefield, Madden, NBA 2K, Minecraft, etc. weren't on their system. It was a negative feedback cycle.

Hopefully this time around they have recognized that they need third parties to be successful, and they'll invest a lot more into their ecosystem.

Assuming she is, It wouldn't make sense for Nintendo to output so many games. I think she's misinformed and is going on games in development, not necessarily due for release in year 1

She said she is 100% confident in that, she probably exaggerating a little, but in any case I expecting much better launch and 1st year and whole output of games than Wii U had.

Yeah I think we all expect that much.

I'd even go as far as to say that I think NX year 1 can match and beat Wii U's first 2.5 years first and second party wise with enough effort. But a full blown 4 years? Just not realistic.

Liam Robertson, a trustworthy source (he's the dude from Unseen64) confirmed many of the things Emily said in the past, plus they both predicted sharing some sources that Colour Splash was a thing...

Never thought I'd see the day that Spemanig admits to someone being more bullish than he is.

Aside from that, while this does make me excited it would put Nintendo in serious crunch mode to pump games out that fast. Maybe a combination of console and handheld integration coupled with farming out IPs to close developers?