• General
  • Remove support for generating metric testing coverage (#3397)
  • Fix log pipe corruption on Windows (#3413)

Full changelog

• General
  • BUGFIX: Correct glean.database.rkv_load_error's category and glean.upload.discarded_exceeding_pings_size's name (bug 2009475)
  • Event timestamps are now always clamped to the range of a signed 64-bit integer.
    An overflow is recorded in the new metric glean.error.event_timestamp_clamped in case this happens (#3308).
  • BREAKING CHANGE: Updated to UniFFI 0.31.0 (#3366)
• Android
  • Updated Kotlin to 2.3.0 (#3379)

Full changelog

• General
  • Updated to glean_parser v18.2.0 (#3356)
• Python
  • Source wheel builds now build the SDK upon install correctly (#3359)
• iOS
  • Annotate the PingUploadScheduler as unavailable for iOS App extensions (, as app extensions run in a restricted environment without access to UIApplication.shared.#3355)

Full changelog

• General
  • Stop reporting db file sizes during init phase (#3331)
  • Tiny performance improvement for putting tasks on the dispatcher (#3318)
  • Instrument the case when the client_id.txt file does not exist yet (#3339)
  • When a missing client ID in the database is detected, Glean now restores the backup client ID (#3334)
  • Disable the post_init health ping (#3343)
• iOS
  • Glean for iOS is now being built with Xcode 26.2 (#3350)
  • Fix strict concurrency warnings uncovered in Swift 6 (#3325, #3347)
  • Correctly end background tasks (#3347)
• Android
  • Configuration-time performance optimizations for the Glean Gradle Plugin (#3326)
• Python
  • Bindings are generated in library mode, enabling source install from PyPI (#3317)

Full changelog

• General
  • Use an explicit match for the labeled metric ping sections (#3335)

Full changelog

• Kotlin
  • BUGFIX: For lateinit metrics, check that the metric was instantiated before recording on it (#3309)

Full changelog

• Kotlin
  • BUGFIX: For lateinit metrics, check that the metric was instantiated before recording on it (#3309)

Full changelog

• General
  • Store the client ID in an additional plaintext file and report on regeneration (#3292)

Full changelog

• Swift
  • Rely on Codable again for serialization of object metrics (#3300)

Full changelog

• General
  • BREAKING: Remove infill 0 buckets from custom distributions (#3246)
  • Add a new oneOf type to Glean's object metric type structure (#3273)
  • Updated to glean_parser v18.0.2 (#3273, #3289)
  • For timestamps in timespan and timing distribution metrics we only consider awake time now (#3279)
• Rust
  • Use an associated type for TestGetValue (#3259)
• Swift
  • Make EventMetricType, ObjectMetricType, URLMetricType and Ping Sendable (#3255)
  • Glean for iOS is now being built with Xcode 16.4 (#3270)
• Android
  • BREAKING CHANGE: Updated the minimum Android API level to 26 (Android 8) (#3287)
  • Updated Android Gradle Plugin to 8.13.0 (#3287)
  • Updated Kotlin to 2.2.20 (#3287)
  • Updated NDK to r29 (#3290)