They are letting the investors know in advance they won’t talk about Switch. The Japanese Twitter account is used for these kind of things.

Maybe it’s just for the photo, I thought it was crib at first haha.

There is only so much you can do with a Mode 7 track editor. Mario Maker provides a massive catalogue of obstacles and power ups for the creator to use as they see fit, an OG F-Zero maker won’t provide even a fraction of opportunities. As a standalone software it doesn’t make business sense, but it could be an expansion to 99.

The rumor basically claims the dev kits have an LCD screen, it could be subject to change, but developers need to know how their games will look like on the screen, so if it’s true the kits have this screen, then the console most likely will have it too.