@OP
Yeah.......sorry. Not proof by any means.
The only home console Metroid has skipped was N64, thus far. I think there'll be a Wii U Metroid. I just hope it isn't a pile of pigshit like Other M was. I'd rather have a TRUE 2D, hand drawn, HD Super Metroid sequel. That's me. I'd accept another Prime game, but I'm not craving one, I think the Trilogy was enough, and really want to see Retro do an original IP.
But I do think we'll see Metroid on Wii U.