Gmail for Android Code Reveals Upcoming Gemini Email Summarization Feature

Gmail on Android appears to be preparing to add Gemini-powered email summaries, as evidenced by hidden code discovered.
Gemini email summaries generate a brief overview of long email threads so you don't have to read through all the messages.
The new feature was spotted in an unreleased version of Gmail for Android as a "Summarize this email" button below the subject line.
The email summary tool doesn't actually work yet on Android, but its presence indicates Google plans to bring it to mobile.
It's unknown when the Gemini email summary feature will officially launch on Gmail for Android or if it will be limited at first.