Stealth Update
Noun · Slang & Abbreviations
Definitions
A change shipped quietly with little or no visible announcement. In engineering slang, stealth updates sometimes reduce drama and sometimes create confusion when users or teammates notice unexplained behavior shifts.
In plain English: A change made quietly without clear announcement.
Example: "The auth team slipped in a stealth update to token lifetimes, and support only learned about it when customers started reporting surprise logouts."