Small News Update:
Cygames confirms that Granblue Fantasy Re:Link will be released in Japanese, English, French, and other languages - Destructoid
Here's the excerpt that confirms the game's localization:
"McCarthy was scarce with more details for Project Re:Link. We do know Cygames is aiming to launch the title in Japanese, English, French, and a few other languages at the same time. Other than the video above, that's all the information they had to offer. As that trailer made its debut at last year's Granblue Fantasy festival, I wouldn't be surprised if we find out more at this year's event."
I won't be adding this to the OP until we get more details about the localization.