Honkai Impact 3rd · Update notes
Letter to Tomorrow — commemorative-song wallpaper
An official wallpaper for the commemorative song Letter to Tomorrow is available at its native 3840×2160 resolution.
The announcement also links to the song.
Wallpaper
The gallery links to the original wallpaper attached to the official post.
It depicts the characters gathered beneath a tree and measures 3840×2160 pixels; the complete original is available separately from its thumbnail.
Official song link
The announcement’s song link is https://youtu.be/n7soPRjDbtI .
This entry covers the wallpaper and public announcement; it does not describe video scenes or playback.