The reason why they probably don't have a window for when the game is coming out for Switch probably has something to do with Unity implementation. When you work on game engines you sort of have to do what you can. You're not in full control.
Like with the case with Axiom Verge. The game was obviously something Metroid fans or classic game fans would love. That isn't mainly the ps4 audience. The game was on other systems before Wii U because of issues with getting it ported. They had the same problem with Vita, but had to wait on the engine guys.
because Switch is not going to be easy to find, i'm probably going to buy a ps4. I had planned on buying one because a few titles are enticing. I might transfer it to my brother, but he might not appreciate it.