Nintendo has released a new patch (1.1.2) for The Legend of Zelda: Breath of the Wild on both the Nintendo Switch and Wii U, and like patch 1.1.1 the change log doesn't mention any concrete details, simply saying that "adjustments have been made to make for a more pleasant gaming experience."
The previous patch already improved the frame-rate of the Switch version of the game, and maybe this patch will fix the same issues in the Wii U version. Some users on Reddit mention that the patch fixes a glitch which allowed players to get infinite arrows, which is also a plus.
Let us know if you've noticed any changes!