There is currently no mainline Metriod Prime game in development according to Prime's producer(and a bit of info on where the series will go in the future)

[FunFan]

cycycychris said:

Here's a bit from his Q/A, I'll just post it all since its a bit informative

This information comes from Metroid Prime series producer Kensuke Tanabe…

“If we started for Wii U now, it would likely take three years or so. So it would likely now be on Nintendo’s NX console. It’s a long time but it would need to include a lot of content, which would take a lot of work on the development side.”

Is this confirmation that NX is a console?