See what’s new in Firefox!

Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release.


Firefox Beta

January 27, 2016

Version 45.0beta, first offered to Beta channel users on January 27, 2016


  • Instant browser tab sharing through Hello

  • Tabs synced via Firefox Accounts from other devices are now shown in dropdown area of Awesome Bar when searching

  • Synced Tabs button in button bar

  • GTK3 integration (GNU/Linux only). Disabled after beta 4

  • Introduce a new preference (network.dns.blockDotOnion) to allow blocking .onion at the DNS level

  • Guarani [gn] locale added


  • URLs containing a Unicode-format Internationalized Domain Name (IDN) are now properly redirected



Developer Information