Note: This is a beta release. Please file new issues for any bugs you find in it.

This release is published to npm under the beta tag and can be installed via npm install electron@beta, or npm i electron@4.0.0-beta.9.

Bug Fixes/Changes

• chore: expose release id for use in cleanup. #15903

• chore: improve granular release cleanup (backport: 4-0-x). #15905

• chore: allow bumping stable => beta. #15908

• test: fix a bunch of flaky tests related to emittedOnce (backport: 4-0-x). #15891

• fix: backport patch that ensures that cookie store is always created (backport: 4-0-x). #15890

• ci: Renable ffmpeg and mksnapshot tests on Azure Devops. #15902

• fix: prevent bluetooth device list from growing without bound (backport: 4-0-x). #15866

• chore: remove unused module. #15924

• security: only handle related IPCs when tag is enabled (backport: 4-0-x). #15931

• feat: add media access APIs for macOS Mojave. #15948

• fix: use appropriate site instance for cross-site nav's (backport: 4-0-x). #15969

• fix: move NativeWindow tracking to OSR WCV (#15585). #15970

• Revert "fix: use appropriate site instance for cross-site nav's (backport: 4-0-x) (#15969)". #15995

• fix: incorrect view ordering for customButtonsOnHover (backport: 4-0-x). #15996

• fix: do not print an error for an expected condition (#15991). #16000