Why did Furukawa say they would reveal Switch 1 by March 31? That is the last day of their fiscal year, and their intent was to let Switch 1 coast as long as possible to pad those financial results before letting the cat out of the bag. (No wonder there is talk that internally, they're PISSED)
I have two trains of thought, one that they have utterly no motivation to launch a system without a holiday unless they're recovering from a disaster. The other is that, now that they've tried it, they don't think the "one, two punch" strategy is that bad, launching with one mega title and then dropping another November to snowball momentum.
Here's the equalizer. We already shot past Q1/2, and summer is regarded as a good time to release a blockbuster movie, but not really drop a game. Gonna drop the whole system in summer? Bold....believe me I hope we get it earlier, but my gut feeling is be ready to wait.