Nintendo has already revealed release dates for two Switch titles in Japan, and both are set for Aug. 3rd, 2019. First up is Unruly Heroes, which is priced at ¥2,200, and the preload option gets you 20% off (¥1,760). The game supports both Japanese and English, and requires 2.6 GB.
Tom Create is releasing their 2D platform game Ninja Battle Heroes S on the same day, and it's priced at ¥900. This is a reworked version of a 3DS game where you're on a mission to find the missing Yukimura and his Beast Brigade. This version supports both Japanese and English, and requires 246 MB.