On the Nintendo Store site, you're able to register your interest in the release and would receommend doing that.
It also did this for the SNES Mini and although I'm signed up for newsletters etc., I didn't receive an email about it but people I know who had registered their interest did. I'm not going to repeat this mistake.
Huh ok, I did this for the snes mini and got an email about that when it went up but I've not seen it for Samus returns, either it's not on the mobile site or I'm blind, do you have a link for this at all?