Amazon Spain lists Mario Tennis Aces for release on June 22nd, 2018

Sometimes retailers are spot-on with release dates, and other times they're using placeholders. It's usually pretty easy to spot the placeholders, but when it comes to Amazon Spain's listing for Mario Tennis Aces, it's a bit iffy. The game went from having no date on Amazon Spain's site to now stating it'll release on June 22nd, 2018. It's definitely a plausible date. I guess we'll just have to hang tight and wait for Nintendo to confirm.