Earlier today, Square-Enix confirmed that Dragon Quest XI was coming stateside on Sept. 4th, 2018. There's some bad news for Nintendo fans though. The 3DS version of Dragon Quest XI isn't getting localized, and the Switch version won't see release this year.
"Our aim with Dragon Quest XI and the Dragon Quest brand is to grow the audience in the West. From a business point of view, it made strategic sense to release the 3DS version in Japan in 2017. For the West in 2018, it made the most sense to focus on the PlayStation 4 and PC (Steam) platforms.
We are also developing the Switch version for Europe and North America, but development is expected to take a long time from a technological standpoint as well, so we still have a long way to go until its release".
Square-Enix went on to say that the Switch version will definitely not be released in 2018, and could end up launching "much later".