Coming from a Eurogamer interview with 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. Instead of broadening it to more planets I would have one and would focus on the timeline, and being able to change that. That's one interesting idea I have in mind... but I understand many people thought that [Echoes] was too difficult.

So it was Sylux, another hunter from Metroid Prime Hunters at the end of Metroid Prime 3. Personally I'd like to create a story centring around Sylux and Samus. We've done a story based on the Hunters, and this time around we're doing a story on the Galactic Federation. I would like to cross the two over in the future. And of course see a little more of Samus. Three ends the trilogy, but if I can I would like to continue with numbered games.

I'm the producer of the Metroid Prime series, and [Metroid series co-creator] Yoshio Sakamoto is the one in charge of Metroid itself. I'm not sure when he's planning on making such an announcement so I can't speak for him. I'm not thinking about anything like that [partnering with another studio] right now. We have nothing to announce on working with any specific team. It is a great idea, I agree. Truth be told, making HD games takes a lot of time and resources. I haven't been able to collect a team or the resources to do it."