I do trust that my information is accurate. Even with some minor discrepancies among them, Incineroar, Ken, and a Square Enix character (though this one may be the first DLC character for instance, to use a minor discrepancy example, all of them have heard it is happening) are the constants among all of them. Some kind of Minecraft content will be present, but the vagueness of this makes me wonder not just what it will be, but when it would be added now that we are down to the wire.
I will say right now that I do not know what the exact number of remaining character reveals is. But there seems to be another new Nintendo character aside from Incineroar if a video passed along was infact real.
The situation surrounding it is a leaked video that makes me not able to say anything about it and was advised not to because the video was watermarked. But I have heard about it personally because one of my contacts was one of the people wound up coming across the video too.