Version 42.0.1, first offered to Release channel users on November 19, 2015
Check out "What’s New" and "Known Issues" for this version of Firefox below.
As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla. If interested, please see the complete list of changes in this release.
We'd also like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!
42.0.1 - Fix a crash in the OpenGL init process (1209612)
42.0.1 - Android 6.0 devices (eg Nexus 5X/6P) reboot/restart or hang when playing audio/video fixed (1221228)
Reference: Release notes for Firefox 42.0