In the tweet above, it seems like Level-5 might be teasing a localization of Yo-Kai Watch 3. If you look down in the bottom left-hand corner, you can see the ears of Usapyon, a Yo-kai introduced in Yo-kai Watch 3. Certainly seems like a bit of a tease for what's to come!
UPDATE - It seems Usapyon appeared in a Yo-Kai Watch Busters update. He was also part of Wibble Wobble. We didn't get Busters in the states, but we did get Wibble Wobble. Still, his sneaky appearance in the tweet leads us to believe something is up.