Just like in the DS classic, Square Enix's new website shows that we have seven days to find out the future of TWEWY.
While we don't know what Square Enix is going to announce, it is beyond a doubt that it will be related to TWEWY franchise. The evidence includes:
The song playing on the website is a remix of TWENTY song "Calling."
The seven-day countdown is a major plot device of TWEWY and the font in the count mimics that from the game.
The website lists Tetsu Nomura and Gen Kobayash as character designers - a role they filled in TWEWY
The website address is /subaseka/. SubaSeka is the Japanese shorthand for The World Ends With You, which is titled Subarashiki Kono Sekai in Japan.
The countdown will expire at midnight ET, August 27. Until then all we can do is guess what Square Enix has planned.