Firefox 42 will not allow unsigned extensions

Will this also affect Firefox for Android?

Mozilla currently don't provide a dev build for Android, just regular and beta versions https://play.google.com/store/apps/developer?id=Mozilla

The security problem that this "fixes" is not really an issue on Android due to Android's own app sandboxing, so maybe the Android build will allow unsigned extensions? It's not mentioned in the FAQ.

Mozilla provides Aurora and Nightly for Android. They're just not on the Play Store, but you can download them from their website.

https://nightly.mozilla.org/

not really an issue on Android due to Android's own app sandboxing

A malicious add-on could still steal all your passwords.

> Mozilla currently don't provide a dev build for Android, just regular and beta versions

Nightly versions of Firefox are available from https://nightly.mozilla.org/.