Man, the Switch version of Trials of Mana must be really low. Maybe we'll see it next week with the 8 new SKUs.
As a general rule, Switch owners seem to preorder later than PS4 owners. You can see it a bit with SD Gundam these days, where the Switch version now mostly gets more preorders but the PS4 got more of them at first.
In other words, I'm not expecting it to show up anytime soon, unless the points barrier drops really low
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454