Taiko no Tatsujin: Drum ‘n’ Fun logo discovered in Taiko no Tatsujin: Nintendo Switch Version!
More evidence of a western release.
The Japanese version of Taiko no Tatsujin: Nintendo Switch Version! contains an English logo for Taiko no Tatsujin: Drum ‘n’ Fun within its files, which was recently rated in Australia and trademarked in Europe.
The discovery of an English logo adds more weight to the likelihood of a western release announcement by Bandai Namco of America and Europe.
In Southeast Asia, Taiko no Tatsujin: Nintendo Switch Version! will receive a day one update when it launches on August 9. In Japan, the game released on July 19.
Thanks, @OtherElm.