v157.0.1 (2026-09-11)

A respin of v157.0 for the Firefox 157 train. The tree is identical to 11c84e57, which is the revision vendored into mozilla-central for 157, so Desktop and Android build from the same application-services source for this cycle.

The following shipped in v157.0 and is not in v157.0.1. All of it remains on main and is expected to ship in v158.0:

• Upgrade to UniFFI 0.32 (#7555). Consuming this requires matching Glean and application-services changes in mozilla-central which are not ready for 157.
• MozAdsEnvironment::Custom(url::Url) and Environment::Custom(url::Url) (#7591). Adding a variant with associated data makes MozAdsEnvironment a non-flat UniFFI enum, which changes the generated Kotlin variants from MozAdsEnvironment.PROD to MozAdsEnvironment.Prod and broke the Firefox Android build.
• AdsStore, a durable sqlite structure for storing ads (#7567).
• Remote settings downloads are only logged on error (bug 2064758).

Full Changelog